Remove obsolete githooks files

 - links, post-commit
 - Also, implement and test a commit-msg hook that appends the version
   to the log message.

Version: 2014.0913.17
Version control githooks/commit-msg

Version: 2014.0913.18
add pytest to requirements.txt file

Version: 2014.0913.19
Minor updates to gtx

 - Add --linkdir to hooks for testing
 - Whitespace management

Version: 2014.0913.20
fix tests in workrpt, test_workrpt

 - new routines in support of fixing workrpt tests: util.epoch(),
   testhelp.HelpedTestCase.expected(), testhelp.HelpedTestCase.setUp()
 - add --dbg py.test command line option

Version: 2014.0913.21
When to avoid updating the commit message:

 - when it's empty or only contains whitespace
 - when it already contains a "Version:" line

Version: 2014.0913.22
gtx tests

 - moved from gtx.py to test_gtx.py
 - filled in test payloads

Version: 2014.0913.23
testing

 - fix workrpt week_ending test with daystart routine
 - support debugger entry on test

Version: 2014.0913.24