Revisit later to make dynamic again

Rename llround(..) to ll_round(..) because of a collision with MS llround (long long round) in VS2013

MAINT-4114: Refactoring the LLBadge code to ensure a parent view always has the badge (to preserve memory cleanliness), but to also allow for badge reparenting so that the NEW badge works in the inventory window.  This change relates to 9e0d629da1487f850beb2767bd47734c4ccc393e.

replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.

consolidated most indra-specific constants in llcommon under indra_constants.h
fixed issues with operations on mixed unit types (implicit and explicit)
made LL_INFOS() style macros variadic in order to subsume other logging methods
such as ll_infos
added optional tag output to error recorders

CHUI-926 FIXED FUI button will stay highlight(orange) if there are unread IMs when the conversation floater is minimized.

changed LLCriticalDamp to LLSmoothInterpolation and sped up interpolator lookup
improvements to stats display of llstatbar
added scene load stats floater accessed with ctrl|shift|2

Cancel sticking of color, if the button is pressed, or when a flashing of the previously selected button is ended

CHUI-600 : Fixed! Modified the button flash state so it sticks after the animation and is dismissed on toggle

CHUI-532 FIXED (Viewer crash when user in conversation is removed from participant list because they logged out or teleported away)
delayed destroy of the timer