Support for looking up nsobject ids by path

 - tcc: nsobj_by_path reports the nsobject id and parent id for each
   path component from root to the leave
 - tcc_lib: nsobj_id looks up a single path component at a time
 - tcc_lib: path_nsobject processes the whole path, returning the
   nsobject id of the file

Change-Id: I4deccaebef66489bd840d8f1a6932b879c3030cc
Priority file support for tcc

 - tcc.py: Interactive 'tcc check -f|-p|-b|-o' support
 - tcc_plugin.py: If priority files are configured, look at them first
 - tcc_lib.py: Support routines for the above (check_file,
   check_object, check_bitfile, check_path, tweaks to tcc_report)

Change-Id: I2d423860d78798368bf8e77bc40bd36a48c94bae
Remove last mention of .hpssic_version

Change-Id: I98ee8de69048e7e6e1100d34fd4529515c0c2a23
Add list of DB2 tables queried

Change-Id: Idc90b0a62caf3357b0d07b37acd2c6e779ea3d8b
Mention activating env hpssic in output

 - Also direct all errors to $CRONOUT

Change-Id: Id36b54715d18545ed6403588da3da560cd3d17f8
Add timeout and retry to DBI objects

 - Required adding err_handler() for sqlite and DB2

Change-Id: I77c37b62f771ecf594334f2342321bb4d9aaf3d3
Better handling of empty bit file list

 - "Nothing to check" message added to message catalog and used

Change-Id: Ibaa4979426598488b424f268b0c16d4ebee8b042
Limit tests to DB2 tables used in rest of code

 - Avoid trying to access any DB2 tables in tests that are not
   accessed in the rest of the code.
 - Allow for specifying dbname to test_CrawlDBI.DBI() routine

Change-Id: I3aad99babb4fd8c6c65f7e7a9aa44c006feecb90
Use timeout when instantiating most DBI objects

Change-Id: Ie0d45b661490f0e4c2e2b6e9831f8d5c29591160
Replace "," with "as" in except expressions

Change-Id: Ib9244f64e0b9a7754c7962ac9e7a62cbca20ecc0
Handle 'use' in alerts section last

 - This is so that other items in the alerts section will get handled.
 - Also imported pdb to trouble-shoot a test

Change-Id: I6785f93da5f1dffec2f0478ed7f1fcac15fe6b53
Added tests and improved coverage of Alert.py

 - Took coverage of Alert.py from 85% to 99%
 - Updated .gitignore to not suppress adds from test directory

Change-Id: Ied610afe1957d5a3f84feab5a31d05afaa7917ca
Priority file support for tape copy checker

 - Finalized check_file(), check_path(), check_bitfile(), check_object()
 - Removed unneeded cfg arg from get_bitfile_set() call signature
 - Added DBIdb2.hexval() in CrawlDBI.py, used in tcc_lib.py
 - Added new messages

Change-Id: I06d0d5135b795bfeb3866e4f3f6afa9e0724c0ff
Changed get_bitfile_set() call signature

 - Updated calls in tcc_plugin.py and tcc.py

Change-Id: Ia014a612f799bf16dc31fe0257ec2fb4418ad313
Documentation updates

Change-Id: I82242a6bc250395753241816a454e04339a8adfa