Patch 1 in a series of cleanup patches from Will Schmidt

Update ifdefs around the bogus-LR-value-handling code to allow ppc64le to
behave as ppc64 (BE) does.

This fixes the overlap test case, where the stack unwinding code was
otherwise coming up with bad instruction pointers.
This patch fixes Vagrind bugzilla 347322.

git-svn-id: svn:// a5019735-40e9-0310-863c-91ae7b9d1cf9
1 file changed