Branch for adding initializer list support (only in the unreleased gcc 4.4 at the moment).

svn path=/branches/initializer-list/boost/mpl/; revision=48931
Ralf's mpl patches for gcc 4.4. Needed to be able to test initializer list support.

svn path=/branches/initializer-list/boost/mpl/; revision=48949
Initialise svnmerge.

svn path=/branches/initializer-list/boost/mpl/; revision=48951
Merge from trunk to make sure I don't accidentally merge the accidental initialize-list commit and rollback.

svn path=/branches/initializer-list/boost/mpl/; revision=48952