glibc builds using -nostdinc, it must also add all these internal directories
via -system.
This adds a patch to make sure the toolchain's "include-fixed" directory gets
included in glibc_2.5 builds (if it exists)
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4612 311d38ba-8fff-0310-9ca6-ca027cbcb966
Robert Bragg