add support for GCC 4.7-linaro (based on GCC 4.7.1)

toolchain/gcc/Config.in

toolchain/gcc/Config.version

toolchain/gcc/common.mk

...hain/gcc/patches/4.7-linaro/000-upstream_uclibc_fix.patch

toolchain/gcc/patches/4.7-linaro/100-uclibc-conf.patch

...chain/gcc/patches/4.7-linaro/301-missing-execinfo_h.patch

toolchain/gcc/patches/4.7-linaro/302-c99-snprintf.patch

.../gcc/patches/4.7-linaro/305-libmudflap-susv3-legacy.patch

...c/patches/4.7-linaro/400-fix-incorrect-optimization.patch

toolchain/gcc/patches/4.7-linaro/600-ubicom_support.patch

...ain/gcc/patches/4.7-linaro/810-arm-softfloat-libgcc.patch

toolchain/gcc/patches/4.7-linaro/820-libgcc_pic.patch

...chain/gcc/patches/4.7-linaro/830-arm_unbreak_armv4t.patch

...cc/patches/4.7-linaro/840-armv4_pass_fix-v4bx_to_ld.patch

toolchain/gcc/patches/4.7-linaro/870-ppc_no_crtsavres.patch

toolchain/gcc/patches/4.7-linaro/910-mbsd_multi.patch

...in/gcc/patches/4.7-linaro/920-specs_nonfatal_getenv.patch

...tches/4.7-linaro/993-arm_insn-opinit-RTX_CODE-fixup.patch

toolchain/gcc/patches/4.7-linaro/999-coldfire.patch