MIPS: Fix white space matching in latin-1 strings wrt \u00a0.
MIPS: Fix white space matching in latin-1 strings wrt \u00a0.

Port r13898 (bcc5b57f)

BUG=

Review URL: https://codereview.chromium.org/12771005

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@13906 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh