- Modified the species stealth bonus to apply to non-orbital buildings.
- Added a primitive stealth indicator to the building indicator mouse-over.
- Fixed the definition of ANCIENT_RUINS_DEPLETED_SPECIAL, which was malformed.

git-svn-id: https://freeorion.svn.sourceforge.net/svnroot/freeorion/trunk@5684 dbd5520b-6a0a-0410-a553-f54834df5b05
Merge remote-tracking branch 'svn-mirror/master'