SH-2541 Fix for speckles on avatar on some cards -- don't use "maximum_alpha" for alpha tests in shaders as it was always being set to 1.0 anyway.

SH-2546 Fix for black avatars and terrain on GF Go 7800 (use vec3 instead of float on varying parameters).

made sessionsettings pref not persistent

  "DisplayDestinationsOnInitialRun" setting or initial agent SL login.
* Added toolbar enumeration for toolbar view so queries for commands can now
  indicate where the command currently is on the left, right or bottom toolbars.
* Updated toybox toolbar button tooltips to indicate where the command currently
  resides in the view.
* Added unused function to allow toolbar buttons to be changed to flash
  indefinitely.

Reviewed by Richard.

EXP-1426 FIX Voice Settings floater button has label Nearby Voice and tool tip with label nearby voice

EXP-1359 FIX -- Selecting New Inventory window from gear menu in Inventory panel opens old My Inventory panel

* Removed old inventory panel.
* Renamed new inventory panel from "my_inventory" to "inventory"

Reviewed by Richard.

EXP-1391 FIX Build button highlighted in toolbar when build tools not active and user opens with ctrl-# shortcuts

SH-2276 Fix for TDR's on GTX 460 et al -- don't use texture units above 16 (workaround for prevalent driver bug)

With repo-making help from Jonathan Yap

* URL's are in place with the [GRID_LOWERCASE] used in the link to go to the
  proper page based on the grid.
* Added "GRID_LOWERCASE" substitution for URL's since it is case sensitive

* Removed "marketplace" button from toybox and default toolbar configuration

* Added Shop button to status bar
* Changed "Inventory..." menu item to go to same window as toolbar inventory button

EXP-1338 FIX -- Clicking on active Toybox buttons triggers clicking sound
EXP-1339 FIX -- No minimum resize dimension for Place floater
EXP-1340 FIX -- No minimum resize demension for Appearance floater
EXP-1341 FIX -- Places Floater doesn't have Help button

* Toybox buttons no longer have click sounds
* Marketplace button opens external browser to marketplace url
* Minimum sizes for places and appearance floaters
* Marketplace URL's now all use https

tooltips are no longer instantaneous once a tooltip is visible

    EXP-1324 Push to talk hot key doesn't change button state of speak button

removed unused LLWeb functions for opening non-web media
moved logic inside floaters and away from auxiliary functions

First pass - no Push-To-Talk functionality.

* Fixed setting to always display the inbox inventory panel.

  with.
* LLAgent now keeps track of whether or not the agent can build in the current
  parcel.
* Hooked up is_enabled_function to build and speak commands.

storm-1581: modify feature table rules to increment version only when the intent is to reset all graphics preferences