I have committed a patch to libgo to update it to the Go 1.5 release.

As usual for libgo updates, the actual patch is too large to attach to
this e-mail message.  I've attached the changes to the gccgo-specific
files.

Bootstrapped and ran Go testsuite on x86_64-pc-linux-gnu.  Committed
to mainline.

This may cause trouble on non-GNU/Linux operating systems.  Please let
me know about any problems you encounter.

Ian