dunecontrol fails to properly process Git settings where the value contains
spaces. It was supposed to handle quoting the same way the shell does, but
instead arguments were split at each space and quotes kept verbatim in the
split arguments.

The reason is the order in which the shell performs variable substitution and
tokenizing, preventing the line with the Git configuration entry from being
tokenized by the shell.

This patch fixes the problem by first parsing the line into an array, which is
then in turn expanded again with correct per-element quoting.

In addition, make COMMENT helper variables local while we're at it.

quick-fix to make CMAKE builds respect the DUNE_BUILDDIR entry in opts
files

This is the same fix as for debugallocator. See flyspray #1287.
The problem was that move semantics were used if the compiler supports
variadic templates.

fix the last doxygen fix

some accidential debug statements broke the build for a clean checkout

In order to reuse the same source file, the fassign tests pass in
the values to be assigned as a preprocessor define. Unfortunately,
the preprocessor of clang 3.3 dies on this list if it contains spaces.

fix FS#1301

In order to reuse the same source file, the fassign tests pass in
the values to be assigned as a preprocessor define. Unfortunately,
the preprocessor of clang 3.3 dies on this list if it contains spaces.

make doxygen work in out-of-source builds:
extra magic to find the correct doxygen-tag file

fix global extern variable

also test assignment of fieldmatrix from densematrix

The behavior of DebugAllocator depends on whether the compiler supports
rvalue references, so make sure to run the corresponding test.

r7472.

[[Imported from SVN: r7473]]

[[Imported from SVN: r7472]]

This patch makes it possible to bypass installation of the whitespace hook by specifying

VCSETUP_FLAGS="DISABLEWHITESPACEHOOK=1"

in the user's options. If dunecontrol encounters that flag, it will not attempt to install
the hook in any module, uninstall the hook if it has already been installed and output a
warning telling the user that he'll have to take care of whitespace by himself.

[[Imported from SVN: r7471]]

This patch allows the user to specify a file with Git configuration options that
will be applied during the vcsetup phase, which might be used to set a custom identity
within the repository (e.g. an @dune-project.org email address) or to set up personal
aliases.

In order to enable this feature, put the line
VCSETUP_FLAGS="GIT_CONFIG_FILE=</path/to/your/config/file>"
into your options file. The configuration file itself is fed to the command
"git config" line-by-line, so you can normally set an option by simply having a
line like "config_key value" in the configuration file. Lines starting with # are
skipped and can be used for comments.

[[Imported from SVN: r7470]]

[[Imported from SVN: r7469]]

This patch hooks vcsetup into the standard "dunecontrol all" incantation
that most users are likely invoke after cloning a repository. By running
vcsetup that way, most Dune users will automatically have the whitespace hook
installed, which should greatly improve the usability of user-submitted patches.

[[Imported from SVN: r7468]]

This patch adds the new command "vcsetup" to dunecontrol. This command
is intended to perform various setup actions on a module that has been
checked out from a version control system.

For now, the command

- installs the whitespace hook bin/git-whitespace-hook as a Git pre-commit hook
  if all of the following conditions are met:
  - the current module is a Git repository
  - the dune.module file contains the line "Whitespace-Hook: Yes"
  - there is no existing pre-commit hook that would be overwritten
  The script detects older versions of the whitespace hook and updates them
  if necessary.

- applies Git configuration settings from the file .vcsetup/config.
  The contents of the file is simply fed to "git config" line by line. That
  way, Git configuration keys can be set by simply adding a line of the form
  "key value". Lines starting with "#" are filtered out and can thus be used
  for comments.

- runs all executable files in the directory .vcsetup/run.d
  This can be used for more elaborate setups. Note that these scripts are run
  if any of the following files/directories are found: .git .svn CVS stamp-vc

[[Imported from SVN: r7467]]

bin/git-whitespace-hook is a Git pre-commit hook that enforces our
whitespace policy for local commits. By installing this hook in a
local Git repository, users can make sure that there won't be any
nasty surprises when trying to merge their commits to the central
repository later on.

[[Imported from SVN: r7466]]

Patch was kindly provided by Bernd Flemisch.

[[Imported from SVN: r7465]]

Moved add_dune_<package>_flags functions out of the
Find<Package>.cmake modules, as they were missing with set
CMAKE_DISABLE_<Package>=TRUE.

Now they are in speparte modules Add<Package>Flags and thus can be
used as exspected with disabled packages.

[[Imported from SVN: r7464]]

Find<Package>.cmake modules, as they were missing with set
CMAKE_DISABLE_<Package>=TRUE.

Now they are in speparte modules Add<Package>Flags and thus can be
used as exspected with disabled packages.

[[Imported from SVN: r7463]]

not available in older bash versions.

[[Imported from SVN: r7462]]

[[Imported from SVN: r7461]]

  latter should be used to specify the location of the cmake package
  config file.
- Use check_function_exists to search for METIS_PartMeshDual.
  The previously used check_symbol_exists is meant for checking
  symbols defined in headers.

[[Imported from SVN: r7460]]

  latter should be used to specify the location of the cmake package
  config file. 
- [BugFix] Set HAVE_PARMETIS for config.h generation
- Use check_function_exists to search for parmetis_v3_partkway.
  The previously used check_symbol_exists is meant for checking
  symbols defined in headers.

[[Imported from SVN: r7459]]

this was the other way around.

[[Imported from SVN: r7458]]

[[Imported from SVN: r7457]]

less interference.

[[Imported from SVN: r7456]]

[[Imported from SVN: r7455]]

templates.

This way dune-common compiles as before if variadic templates _and_
move semantics are not present.

[[Imported from SVN: r7454]]

variadic templates if available. 

This breaks building of the test of debug allocator as it uses std::forward.

[[Imported from SVN: r7453]]

fix incompatibility with mawk

- explicitly state list of whitespaces
- patch by Ansgar Burchardt

[[Imported from SVN: r7452]]