removed merchant outbox context menu
reviewed by Leslie

reviewed by Leslie

Use the new "Avatar Rez" debugging tag to see the output.

SH-2791 Use request class constructor/destructor for keeping track of concurrent requests instead of unreliable increments/decrements sprinkled around the code.

SH-1427 Fix for spot lights not working properly on alpha objects, and fix for alpha lighting of point lights not matching deferred lights.

Reverting background fetch on an item to the old fetFromServer call to fix regression bug in inventory late loading

Reverting rev 22217 changes to background fetch so search and recent will fully fetch user inventory

Reviewed by davep.

EXP-1799 FIX -- Replace and Add to Outfit options and Copy to Merchant Outbox options can appear in invalid state when a valid folder is last selection
EXP-1834 FIX -- Right click context menus on Folders in Merchant Outbox and Library folders can show all inventory options including admin options
EXP-1835 FIX -- Right clicking on a folder and selecting New Folder creates folder under My Inventory not within selected folder

* Updated folder context menu building to build full options in one step or
  trigger a load which will rebuild top-level context menu for all selected
  items when complete.  Previous code had an implicit assumption that the
  selected folder was the only selection after background fetch.

* Refactored LLFolderBridge::buildContextMenu fetch to clear and rebuild basic
  context menu options after the fetch rather than trying to merge the two.

* Modified build context menu code to not disable items that are invisible so
  secondary background fetch can coalesce menu options with proper state.
* Removed "Move to Merchant Outbox" context menu option.

fix for SH-2823 and SH-2824: LLCurl crash inside LLBufferArray::countAfter() and LLBufferArray::copyIntoBuffers