MAINT-3529 FIXED Certain pathcuts made to a cube cause some faces to not react to sunlight or local lights

MAINT-4092 FIXED Prim faces with opaque diffuse maps, with material set to ALPHA MODE BLEND, do not render
Pathset #3. Fix problem with not existing UUID's and if have a "conflict" when
material can't have DIFFUSE_ALPHA_MODE_BLEND and DIFFUSE_ALPHA_MODE_NONE simultaneously.

MAINT-1789 FIXED Object inspector doesn't show any information about object if user uses Select Only My Objects option

MAINT-4092 FIXED Prim faces with opaque diffuse maps, with material set to ALPHA_MODE_BLEND, do not render
MAINT-4645 FIXED [viewer-lion] The build tool shows normal or specular map as 'none' when one exists

MAINT-4617 FIXED Viewer chews on "Inventory->Open and Select" until inventory received or recent items selected

MAINT-3067 FIXED Show context menu when right clicking avatar name in the list. Bumps, Pushes and Hits moved to Help from Develop menu

MAINT-4621 FIXED start new session with the caller (if it doesn't exist) and only then show autoreject message

The bug was fixed, the reasone of crash is following. The Core Flow view
contain another GL context and will not care about restoring a previous.
I restore context manually.
This path also contain a minor changes in another files.

All changes described here.

Сhange's for fix current bug.
indra/llwindow/llwindow.h
indra/llwindow/llwindowheadless.h
indra/llwindow/llwindowmacosx.h
indra/llwindow/llwindowsdl.h
indra/llwindow/llwindowwin32.h
indra/newview/lllocalbitmaps.cpp
indra/newview/llviewerdisplay.cpp
indra/newview/llviewerdisplay.h

Twice mUsage initialization (replace to forward initialization).
indra/llcharacter/lljointstate.h

Looks like condition should be befor memcopy call, otherwise - possible CRASH.
indra/llcommon/llmd5.cpp

Unused condition and variables.
indra/llmath/llsphere.cpp

Looks like should be under if otherwise - possible CRASH
indra\llprimitive\llmodel.cpp

Useless assert's.
indra/llrender/llrender.cpp
indra/newview/lldaycyclemanager.cpp

MAINT-1884 FIXED "Shortcut Key" text label is overlapped by drop-down lists in Preview floater when user opened more then one gesture

MAINT-4617 FIXED Viewer chews on "Inventory->Open and Select" until inventory received or recent items selected

MAINT-2759 FIXED Touch is greyed out when right clicking on child prims in a touchable linkset if the script uses a reset on rez

less than allowed. Changes in all other files relate auxiliary methods for
catching similar bugs in future.