Also upgrade the file picker filters with the new extensions found
in the orginal file picker code of Singularity.
Also improve AIFilePicker a bit: added hasFilename() and now
deleting the statemachine automatically by default: it's no longer
needed to call deleteMe from the callback.
Fixed by updating indra/cmake/WebKitLibPlugin.cmake with
version from imprudence.
This commit also contains removal of execute permissions
of source files and configure files, sorry...
Most the changes are due to InventoryObjectList* changing to LLInventoryObject::object_list_t*, LLInventoryItem::II_FLAGS* changing to LLInventoryItemFlags::II_FLAGS* and also const'ing.
Certain perms for certain asset types(callcard&landmarks) have been laxed, as per LL's V2.
LLInventoryType now does lookups mostly though new lldictionary class.
LLLandmark using boost for callbacks, instead of custom class structure.
