Merged from r195975 and r195976.

Merged from r195975 and r195976.
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r195975 | zjovanovic | 2013-11-30 19:12:28 +0000 (Sat, 30 Nov 2013) | 1 line

Fixed issue with microMIPS long branch.
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r195976 | zjovanovic | 2013-11-30 19:13:15 +0000 (Sat, 30 Nov 2013) | 1 line

Test case for issue with microMIPS long branch.
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To expand on those commit messages:
The immediate in a MIPS branch is multiplied by the instruction size before use
as an offset. For many MIPS ISA's this is 4 bytes, but for microMIPS it is 2
bytes. This commit corrects the scale factor used for microMIPS so that attempts
to use large offsets result in a valid sequence of instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196043 91177308-0d34-0410-b5e6-96231b3b80d8