[scripts] patch-specs.sh: fallback to ext-toolchain.sh --wrap if spec file...

[scripts] patch-specs.sh: fallback to ext-toolchain.sh --wrap if spec file patching is not possible (gcc < 4.3.0)


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29945 3c298f89-4303-0410-b956-a3cf2f4a3e73