EXT-6689 : INFRASTRUCTURE : LLInventoryBridge code cleanup

Moved a bunch of local llinventorybridge functions into .cpp.
Did a bunch of superficial cleanup of llinventorybridge and related files.

indra/llinventory/llinventorytype.h

@@ -75,7 +75,6 @@ class LLInventoryType
 	// machine transation between type and strings
 	static EType lookup(const std::string& name);
 	static const std::string &lookup(EType type);
-
 	// translation from a type to a human readable form.
 	static const std::string &lookupHumanReadable(EType type);