gcc-4.5: Upgrade to latest gcc-4_5-branch and linaro 4.5

Additionally fix ppc build break caused by linaro android config
patches.

Angstrom console-image built clean from scratch for arm ppc mips x86 x86_64

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>