Update qtoolalign (Fixes issue 704)

- Removes shortcut ctrl-a for align tool
-- to avoid ctrl-a for select all text in UI controls messing up prim selection
- Adds llselectmgr select all function
-- to replace ctrl-a select all prims functionality that was a side effect of qtoolalign having this shortcut
- Adds toggle button (up/down arrow) to build floater for toggling display of the lower tab container area
-- This is to satisfy users who relied on ctrl-a to use align while the build floater was minimized and out of the way
- Syncs qtoolalign from Alchemy

indra/newview/llselectmgr.cpp

@@ -6734,6 +6734,24 @@ void LLSelectMgr::doDelete()
 	selectDelete();
 }
 
+// <Singu> Note: Allow Ctrl-A for select all linked prims
+//-----------------------------------------------------------------------------
+// canSelectAll()
+//-----------------------------------------------------------------------------
+BOOL LLSelectMgr::canSelectAll() const
+{
+	return !mSelectedObjects->isEmpty();
+}
+
+//-----------------------------------------------------------------------------
+// selectAll()
+//-----------------------------------------------------------------------------
+void LLSelectMgr::selectAll()
+{
+	promoteSelectionToRoot();
+}
+// </Singu>
+
 //-----------------------------------------------------------------------------
 // canDeselect()
 //-----------------------------------------------------------------------------