rose edit: speed up slow loading-up code
rosa svn-*: notify and verify users

LDAP and Unix password user tools.
Improve diagnostics.

rosa svn-pre-commit: verify users in owner and access-list
rosa svn-post-commit: notify users in owner and access-list on changes
Merge pull request #1277 from benfitzpatrick/rose-edit.speedup-loading

rose edit: speed up slow loading-up code
rosa svn-pre-commit: use simple split
Merge pull request #1278 from matthewrmshin/rosa-svn-ldap

rosa svn-*: notify and verify users