enigma1 - 2:40 pm on Oct 3, 2011 (gmt 0)

Although I haven't worked as part of a big team for ages I remember in the 90s the ancient pvcs was doing just what you asked for item-1. Are you saying the cvs is not sufficient for this?
[nongnu.org...]

For the 2nd item I would say it depends on the framework architecture. Is that at runtime or buildtime you want to check?

For runtime an example, if I had a common functions file called functions.php and expect it to be used as a helper in various files I would replace the regular PHP control structure. So instead of:
require_once('functions.php')
I could use
my_custom_require('functions.php');
And log the caller(s) accordingly.

For item-3 there are various open source package management systems some of which are cross-platform.