[SystemZ] Improve extload handling

The port originally had special patterns for extload, mapping them to the
same instructions as sextload.  It seemed neater to have patterns that
match "an extension that is allowed to be signed" and "an extension that
is allowed to be unsigned".

This was originally meant to be a clean-up, but it does improve the handling
of promoted integers a little, as shown by args-06.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190777 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the build for git repositories with multiple remotes.

Summary:
When a git repository had multiple remotes, ${repository} will be set to a multiline string. This causes compilation errors in SVNVersion.inc.

Fix this by limiting the output of utils/GetRepositoryPath to the first remote (which is reasonably likely to be 'origin').

Reviewers: jordan_rose

CC: llvm-commits, t.p.northover

Differential Revision: http://llvm-reviews.chandlerc.com/D1659

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190778 91177308-0d34-0410-b5e6-96231b3b80d8