Merging r243133:

Merging r243133:
------------------------------------------------------------------------
r243133 | chh | 2015-07-24 11:12:54 -0700 (Fri, 24 Jul 2015) | 8 lines

Correct x86_64 Android fp128 mangled name

These changes are for Android x86_64 targets to be compatible with current Android g++.
https://llvm.org/bugs/show_bug.cgi?id=23897
Use 'g' and 'Cg' for "long double" and "long double _Complex" mangled type names.

Differential Revision: http://reviews.llvm.org/D11466

------------------------------------------------------------------------

git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_37@245095 91177308-0d34-0410-b5e6-96231b3b80d8