Increase minimum OS X version to 10.9.
Fix some tests on OS X by re-focusing the ClipboardBrowser.
Read client output incrementally.

- Fixes some random test failures on OS X.
Ensure that stdout/stderr is always flushed in client.

- Fixes some random test failures on OS X.
Change temp directory used for ItemSyncTests.

- Ensure that the directory name doesn't match the name of any named
  sockets.
Skip test which can't be done on OS X.
Fix creation of QMacPasteboardMime classes.

- Move the instantiation of the classes to *after* the creation of
  QGuiApplication.
Remove unnecessary flush.

- Output is flushed when QFile is destroyed.
Fix loss of focus after editing.

- Force focus back onto the ClipboardBrowser when done editing
- Remove workarounds in the tests
Update doc for building on OS X.
Merge pull request #232 from rygwdn/fix-osx

Fix CopyQ on OS X