[OE-core] [PATCH] gcc: Add recipes for 4.6.0

[Kamble, Nitin A]

Khem,
  Good news. All the gcc recipes built without any errors for arm, ppc, mips, x86, x86-64. Now I am trying to build the poky-image-sato-sdk image for each architecture. Will keep you posted.

Thanks & Regards,
Nitin