[WIP] Feature/solverfactory

This MR mainly contains the factory implementation from !5 (closed) with some cleanup:

• Allow creating solvers / preconditioners from ParameterTrees.

• A solver (including preconditioner) can now be configured via an ini file like this:

[solver]
precond = SeqSSOR
solver = CGSolver

[SeqSSOR]
iterations = 1
relaxation = 1.8

[CGSolver]
reduction=1e-9
maxit = 5000
verbose = 3

• The corresponding dune code currently looks like this:

auto solver = SolverPrecondFactory::create<VectorType> (matrix, configuration, "solver");

• Both the actual type of the solver/preconditioner and their parameters can chosen in the ini file.
• It is also possible to create only a solver or only a preconditioner this way. See the factory doxygen for details.

This MR depends on !84 (merged).

Note: change target branch to master, once !84 (merged) is merged!

mentioned in merge request !5 (closed)

added 29 commits

• ba71efe8 - [compatibility] allow to disable the compatibility layer
• aef54c20 - [dynampic polymorphism] update the category implementation of the eigenvalue solvers
• b553e646 - [dynampic polymorphism] Add categories to spqr, ldl and umfpack
• 4d1af195 - [dynamic polymorphism] update the category implementation of pardiso
• 11cb86b3 - [dynamic polymorphism] Add dynamic category to SuperLU
• b3d733e6 - [dynamic polymorphism] update solvers to store shared_ptr instead of references
• e569bbf1 - [test] update inverseoperator2prectest to new category interface
• e8549ed3 - [dynamic polymorphism] update schwarz.hh to the new interface
• 60b2dc9a - [dynamic polymorphism] update overlappingschwarz.hh to the new interface
• 349bd0e9 - [dynamic polymorphism] update novlschwarz.hh to the new interface
• ddd1979e - [dynamic polymorphism] update twolevelmethod.hh to the new interface
• 762c8cbc - [amg] remove enum category from SequentialInformation
• b012c63f - [dynamic polymorphism] specialize category(...) for getSolverCategory()
• 70c12625 - [amg] add missing methods dot and norm to SequentialInformation
• 3209578d - [amg] make hierarchy creation dynamic
• b2e44205 - [dynamic polymorphism][amg] make AMG use a dynamic category
• ee064bfd - [dynamic polymorphism][amg] make FastAMG use a dynamic category
• 05a0ad9f - [dynamic polymorphism][amg] make KAMG use a dynamic category
• 48661315 - [dynamic polymorphism][amg] make TwoLevelMethod use a dynamic category
• 1945b555 - [dynamic polymorphism] replace ScalarProductChooser by a dynamic factory function
• 2d65fe6c - [factory] Add preconditioner / solver constructors supporting ParameterTrees
• 7b7816c8 - [amg][factory] Support building AMG from ParameterTree
• d1c58bca - [factory] update new constructors to take objects only as shared_ptr
• cf396345 - [factory] Initial solver factory
• bcd76822 - [factory] Add factory for parallel solvers
• fa35cbad - [factory] Parallel factory completed
• daf582f7 - [fix][factory] bugfix solver factory, fix call to scalarproduct factory
• d017736d - [test][factory] Add test for solver factory (based on parallel AMG test)
• a0adfa8b - [lib][factory] Introduce ISTL library with preinstantiated solvers to speed up compile times

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mentioned in issue #26 (closed)

changed target branch from master to feature/dynamicpolymorphism

added 9 commits

• 7dc95b08 - [amg][factory] Support building AMG from ParameterTree
• 8718a6ab - [factory] update new constructors to take objects only as shared_ptr
• f7f07d40 - [factory] Initial solver factory
• bce044ab - [factory] Add factory for parallel solvers
• 99a68142 - [factory] Parallel factory completed
• a1233cb8 - [fix][factory] bugfix solver factory, fix call to scalarproduct factory
• 3b0bfb4d - [test][factory] Add test for solver factory (based on parallel AMG test)
• 9b86c3c6 - [lib][factory] Introduce ISTL library with preinstantiated solvers to speed up compile times
• 6a3b3bba - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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added 1 commit

• 1d684cd3 - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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added 1 commit

• e2d91702 - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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added 1 commit

• 8c0af4fc - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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added 11 commits

• 08f4c432 - 1 commit from branch feature/dynamicpolymorphism
• c7c01b56 - [factory] Add preconditioner / solver constructors supporting ParameterTrees
• 541d52a9 - [amg][factory] Support building AMG from ParameterTree
• 16e41952 - [factory] update new constructors to take objects only as shared_ptr
• b32c60d9 - [factory] Initial solver factory
• 0f5467b2 - [factory] Add factory for parallel solvers
• 82ee83d1 - [factory] Parallel factory completed
• d711f223 - [fix][factory] bugfix solver factory, fix call to scalarproduct factory
• b7fc8b69 - [test][factory] Add test for solver factory (based on parallel AMG test)
• 41c7002a - [lib][factory] Introduce ISTL library with preinstantiated solvers to speed up compile times
• 13fb32f7 - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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added 11 commits

• da90011f - 1 commit from branch feature/dynamicpolymorphism
• 5460788e - [factory] Add preconditioner / solver constructors supporting ParameterTrees
• d80a345d - [amg][factory] Support building AMG from ParameterTree
• 9eefd73c - [factory] update new constructors to take objects only as shared_ptr
• 189d0452 - [factory] Initial solver factory
• a7f7b103 - [factory] Add factory for parallel solvers
• ffb906b7 - [factory] Parallel factory completed
• 00cd298b - [fix][factory] bugfix solver factory, fix call to scalarproduct factory
• 09193edf - [test][factory] Add test for solver factory (based on parallel AMG test)
• 1c6635bf - [lib][factory] Introduce ISTL library with preinstantiated solvers to speed up compile times
• 3727c398 - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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mentioned in merge request !84 (merged)

changed target branch from feature/dynamicpolymorphism to master

added 293 commits

• 3727c398...d74bd9c2 - 283 commits from branch master
• e1c491b9 - [factory] Add preconditioner / solver constructors supporting ParameterTrees
• f9969809 - [amg][factory] Support building AMG from ParameterTree
• 4ad0bea3 - [factory] update new constructors to take objects only as shared_ptr
• 11426be1 - [factory] Initial solver factory
• 4b8e8ab8 - [factory] Add factory for parallel solvers
• b617788a - [factory] Parallel factory completed
• f155f977 - [fix][factory] bugfix solver factory, fix call to scalarproduct factory
• 9b60571b - [test][factory] Add test for solver factory (based on parallel AMG test)
• d95f6fbe - [lib][factory] Introduce ISTL library with preinstantiated solvers to speed up compile times
• 834f92ca - [amg] update Hierarchy to internally manage the finest level vis shared_ptr

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I force pushed a rebase to master. Thanks to @nils.dreier for taking care of this!

added 214 commits

• 834f92ca...929e5a4d - 213 commits from branch master
• 55022351 - Merge remote-tracking branch 'origin/master' into feature/solverfactory

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added 1 commit

• f8941358 - Merge remote-tracking branch 'origin/master' into feature/solverfactory

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mentioned in merge request !315 (merged)

mentioned in commit 94577364

added 39 commits

• f8941358...94577364 - 38 commits from branch master
• 05338d53 - Merge branch 'master' into feature/solverfactory

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added 1 commit

• 09663f2a - [bugfix] reduction is handled as scalar_real_value

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