Remove patchbomb from list of contrib files to install since it's now an extension.
Innosetup script was referencing old contrib location.
Also cosmetic change to group related files.
Removed PKG-INFO from repository, because it already gets auto-generated.
Canonical place for changing the contained info is setup.py.
Create local ui object per repository, so .hg/hgrc don't get mixed.
This is needed for hooks, but may be important for other settings, too.
Fixes
issue113, also integrated push-hook-lock.sh as a test case for this.
Call hooks in alphabetical (=defined) order, of course still grouped by type.
Output of test-hook adjusted.