which may be optionally overridden by version-specific rules.

For example the default rules for gcc on GNU/Linux x86_64 are in the
wmake/rules/linux64Gcc directory.  If there is a need to change any of
the rules for a specific version of gcc, e.g. gcc-4.8.4 the directory
wmake/rules/linux64Gcc48 may be created into which any of the language
files may be provided containing the rules to override the defaults.

The c++0x is used rather than c++11 to support gcc-4.5.?

Also removed __GNUC__ conditional compilation statements which are no
longer needed.

COMP: Fedore13 has linkage with --no-add-needed as default. This disallows indirectly loaded libraries.

This reverts commit 5050e9e6.

-lrt nor needed in src/decompositionMethods/decompositionMethods/Make/options

Adding -lrt to decompositionMethods/decompositionMethods/Make/options
to get rid of get_clocktime error.

openSUSE 11.1.  Added 20 to the template depth for all architectures for CGAL.