Rename getMaximumUnrollFactor -> getMaxInterleaveFactor; also rename option names controlling this variable.

"Unroll" is not the appropriate name for this variable. Clang already uses 
the term "interleave" in pragmas and metadata for this.

Differential Revision: http://reviews.llvm.org/D5066

llvm-svn: 217528
diff --git a/llvm/test/Transforms/LoopVectorize/2012-10-22-isconsec.ll b/llvm/test/Transforms/LoopVectorize/2012-10-22-isconsec.ll
index ae9f998..16d64ea 100644
--- a/llvm/test/Transforms/LoopVectorize/2012-10-22-isconsec.ll
+++ b/llvm/test/Transforms/LoopVectorize/2012-10-22-isconsec.ll
@@ -1,4 +1,4 @@
-; RUN: opt < %s  -loop-vectorize -dce -force-vector-unroll=1 -force-vector-width=4 
+; RUN: opt < %s  -loop-vectorize -dce -force-vector-interleave=1 -force-vector-width=4 
 
 ; Check that we don't crash.