If duncontrol detects an installed dune-common module, then it always
assumed that it contains a lib/dunecontrol
subdirectory. Unfortunately, this does not hold for older dune-common
modules and dunecontrol will error out later with a message like

/usr/local/lib/dunecontrol: file not found
Execution of dunecontrol terminated due to errors!

With this commit we fix this by actually checking whether the
lib/dunecontrol subdirectoy exists before adding it to
DUNE_CONTROL_PATH.

Thanks a lot to wuhao sife for reporting this problem.

The variable is was set and used by dunecontrol but not by duneproject.

As we have bumped our compiler requirements to GCC 4.4+, we can now
require the compiler to support C++11.

This patch updates both the autotools and the CMake tests to produce an
error if the compiler doesn't support either -std=c++11 or -std=c++0x.

It also renames the tests from ..0X to ..11 and renames the configure
options from --disable-gxx0xcheck to --disable-cxx11check and removes a
couple of redundant calls to the autotools macro.

clang does not support -print-multiarch. Therefore we try to
extract the "Target:" line from clang -v.

This was lost in the last commit.

duneproject failed miserably when run with only installed modules. With
this patch we correctly setup the pkg-config and dunecontrol path to
handle this situation. In addition we fixed various issues with the newly
created modules and they now build as exspected.

Some ^[$BLANK] or [^[$BLANK]^'], where $BLANK is space followed by tab
did not work as a capturing statement in some cases (e.g. opts files
with CONFIGURE_FLAGS="CXX='bla'"). After this patch we use [$NOBLANK]
with NOBLANK=^$space^$tab which works. In addition the other patches
form feature/posix-sed-dunecontrol have been backported to close flyspray
1401.

With this patch dunecontrol will work even if the path to the module
contains spaces. Unfortunately, the tests for dune modules will still
not work as I could not figure out how to use quoting in the CPP_FLAGS.

not available in older bash versions.

[[Imported from SVN: r7462]]

this was the other way around.

[[Imported from SVN: r7458]]

[[Imported from SVN: r7457]]

less interference.

[[Imported from SVN: r7456]]

fix incompatibility with mawk

- explicitly state list of whitespaces
- patch by Ansgar Burchardt

[[Imported from SVN: r7452]]

[[Imported from SVN: r7449]]

translating options for provided for configure to CMake syntax.

[[Imported from SVN: r7448]]

At least on Debian CMAKE_INSTALL_LIBDIR is the multiarch libdir.

[[Imported from SVN: r7411]]

Fixes flyspray 1260.
PLEASE REVIEW!


[[Imported from SVN: r7387]]

[[Imported from SVN: r7124]]

[[Imported from SVN: r6988]]

[[Imported from SVN: r6892]]

[[Imported from SVN: r6890]]

improve error message for invalid module names

[[Imported from SVN: r6881]]

[[Imported from SVN: r6873]]

[[Imported from SVN: r6872]]

actually depmode and mainmode where the same... only compute one of them

[[Imported from SVN: r6859]]

only update the module mode if it not DEPS, which is the

[[Imported from SVN: r6858]]

documentation for _search_module

[[Imported from SVN: r6857]]

cleaner eval/test statements

[[Imported from SVN: r6856]]

just search any module (dependencies and suggestions)
and do the splitting of DEPS and SUGS list afterwards
=> make sure a module is not listed twice

[[Imported from SVN: r6855]]