upgrade Linaro GCC to 4.5-2011.05-0 - thanks to Mark Mentovai

toolchain/gcc/Config.in

toolchain/gcc/common.mk

toolchain/gcc/patches/linaro/600-ubicom_support.patch

...in/gcc/patches/linaro/840-armv4_pass_fix-v4bx_to_ld.patch

toolchain/gcc/patches/linaro/850-use_shared_libgcc.patch

...in/gcc/patches/linaro/860-fix_extension_elimination.patch

toolchain/gcc/patches/linaro/910-mbsd_multi.patch

...c/patches/linaro/993-arm_insn-opinit-RTX_CODE-fixup.patch

toolchain/gcc/patches/linaro/995-fa526.patch

toolchain/gcc/patches/linaro/999-coldfire.patch