Fix endian conditions on Solaris. From Alexander Esilevich.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@188613 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r188369 (and r188455) which breaks the build on at least some
Linux systems. I've replied on the original commit thread with details
of the problem.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@188628 91177308-0d34-0410-b5e6-96231b3b80d8