Recognize < and > as binary expressions in builder-type calls.

The current heuristic assumes that there can't be binary operators in
builder-type calls (excluding assigments). However, it also excluded
< and > in general, which is wrong. Now they are only excluded if they
are template parameters.

Before:
return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa()i
       .aaaaaa() < aaaaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();

After:
return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <
       aaaaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();

llvm-svn: 175291