v1.1.0

This is a re-release of perf-dump under the Apache-2.0 WITH LLVM-Exception license.

In addition to the license change, there were a few bugfixes, . These have been on the
master branch for a long time but are now in a release:

• Build fixes by @bhatele in #1
• Build fixes by @bhatele in #2
• Bugfix for faulty check of PDUMP_DUMP_DIR ending with a '/' by @aowenson in #4