Solaris port.  Currently sees around 200 test failures, mostly related to
Solaris not providing some of the locales that the test suite uses.

Note: This depends on an xlocale (partial) implementation for Solaris and a
couple of fixed standard headers.  These will be committed to a branch later
today.

llvm-svn: 151720
GitOrigin-RevId: 14c25b80e9be5aab9b503a53f810c5bbffe4d632