add patch-specs.sh, a utility for modifying GCC specs The patch-specs.sh...

add patch-specs.sh, a utility for modifying GCC specs The patch-specs.sh utility dumps the GCC specs of a given toolchain and modifies them to always include $STAGING_DIR in the link and compiler command lines, this makes most -I and -L flags unnecessary and lets the compiler automatically find libraries and headers in the staging dir, also solves the majority of -rpath issues.

SVN-Revision: 29767