Pfui - 4:36 pm on Feb 24, 2012 (gmt 0)
My cluelessness about 2.2's configs not working vis-a-vis ExecCGI, Includes, and SymLinks (& my surprise, sadness, and increasing despair over the dearth of replies herein & elsewhere) resulted in this long-saga-short solution:
Procured yet another Linux box. Loaded slightly newer version of 1.3 onto it. Restored from backup. Tweaked dirs and permissions on compiled app (e.g., Webinator) files. Swapped out 2.2 box. FINIS
Only oddity w/ 'new' 1.3: Error logs now show the occasional "mod_rewrite's internal redirect status: 0/10" (which apparently is no big deal).
Thank you IncrediBILL, phranque, and Tomcat for touching base.