automatic arch-version.h update; CTCP support; helpfile fixes; disk-out-of-space...

automatic arch-version.h update; CTCP support; helpfile fixes; disk-out-of-space error detection and handling

* Add a rule to automatically check arch version and update
arch-version.h when needed

* Implement CTCP response handling messages direct to services.

* Fix grammar error in GIVEOWNERSHIP help entry, fix cross-reference
markup in several ChanServ commands (should underline, not bold, the
"See Also:" link), remove VERSION help entries from modules that no
longer implement that command.

* Check for errors (using setjmp/longjmp) when writing to a saxdb
file, and log the failures.
git-archimport-id: srvx@srvx.net--2004-srvx/srvx--devo--1.3--patch-36