Remove duplicate entries from message_prehash.h
Remove unnecessary CommitCallback
Merge branch 'master' of git://github.com/AlericInglewood/SingularityViewer
Merge branch 'master' of github.com:singularity-viewer/SingularityViewer
Add optional chat ranges rings on MiniMap

Ability to show Whisper, Chat and Shout range circles on the MiniMap.
Range values are at the moment hardcoded as [10, 20, 100].

Each ring is binded to the following Debug Settings:
Whisper ring:	MiniMapWhisperRing
Chat Ring:	MiniMapChatRing
Shout Ring:	MiniMapShoutRing

Each ring colour can be customised through the following Debug Settings:
Whisper ring:	MiniMapWhisperRingColor
Chat Ring:	MiniMapChatRingColor
Shout Ring:	MiniMapShoutRingColor

The following Debug Setting is used to enable/disable all the rings at once:
MiniMapChatRings
Merge remote-tracking branch 'slb/master'

Conflicts:
	indra/newview/llnetmap.cpp
	indra/newview/llnetmap.h
	indra/newview/skins/default/xui/en-us/menu_mini_map.xml