MIPS: Rename Literal::handle to Literal::value

Port r15280 (1a287b2)

Original commit message:
Just a completely mechanical change...

BUG=

Review URL: https://codereview.chromium.org/17583011
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15302 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Fix Kraken gaussian blur test regression.

The regression was introduced in r13848 by accidental removal of one
additional line.

TEST=
BUG=

Review URL: https://codereview.chromium.org/17570007
Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15303 ce2b1a6d-e550-0410-aec6-3dcde31c8c00