Startup hook changes.

Now, regardless of order, login's contents will apply first, even
if not sourced first.  Then tcshrc will kick off and run the core
bits, as long as there is a terminal.
TCSHRC prompt works now, in new environment.
Merge branch 'master' into prompt-fixes
Merge branch 'master' into startup-hooks
Initial import of the vim bits from classic.
Aliases imported and cleansed.
Merge branches 'aliases', 'prompt-fixes', 'startup-hooks' and 'vim-bits' into integration
Merge branch 'integration' into initial-rework