I changed the OSX app install path a bit. It was changed from 'Contents/Resources' (within the app package) to 'Contents/MacOS'.
You should completely remove your installed GRASS-6.3.app before installing a new build, or the old Resources stuff will hang around, taking up space and possibly confusing GRASS. This will break external apps that link to GRASS libraries (ie Qgis).
'MacOS' is a more appropriate location for the binaries, and is what other UNIX ports do. For some reason 'Resources' made sense back when I set up the app build.
A bonus is that the AppleScript startup is now completely separated from GRASS files. That is, 'MacOS/scripts' (lowercase 's') is for GRASS scripts, as it should be, and 'Resources/Scripts' (uppercase 'S') is where the AppleScript startup resides (this is hardwired in the AppleScript system). This removes the problem of running GRASS.app on a case-sensitive file system (not that anyone is likely to do that).
-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/
"Oh, look, I seem to have fallen down a deep, dark hole. Now what does that remind me of? Ah, yes - life."
- Marvin