Remove ".sh" from file names.
Refactor so it does not rely on PWD being the repo basedir.
Fix assumptions about HG and GIT use.
* Initialization for new repos AUTOMATED.
* Adding new users AUTOMATED.
* Update docs for the new, more simplified installation processes.
* Remove dependency on any particular paths, etc.  Copy "bin" into a place along your path and everything should "just work".
* Add support for Mercurial (not tested).
* blackbox_addadmin now adds keys to the keyring for you.
* Unified #! lines to "#!/usr/bin/env bash" so it works better on FreeBSD.
* BUGFIX: (BugId#1) blackbox_update_all_files.sh expects hg, fails for git.
* BUGFIX: (BugId#2) blackbox_postdeploy.sh assumes certain directory layout.
* BUGFIX: Temporary files aren't deleted.
* NEW FILE: bin/blackbox_initialize: Automates enabling BB for a repo (creates directories, files, and updates .gitignore).
* NEW FILE: bin/blackbox_removeadmin: Automates removing an admit.
* NEW FILE: tools/confidence_test.sh: A battery of tests to verify operations.
* NEW FILE: bin/Makefile: Automate package creation.
* NEW FILE: bin/_stack_lib.sh: A library of shell routines from StackExchange.