cmake: add more LuaJIT lib names

Makes building on Windows easier.

cmake/Modules/FindLuajit.cmake

@@ -47,7 +47,7 @@ FIND_PATH(LUAJIT_INCLUDE_DIR
 		)
 
 find_library(LUAJIT_LIB
-	NAMES ${_LUAJIT_LIBRARIES} luajit luajit-51 luajit-5.1
+	NAMES ${_LUAJIT_LIBRARIES} luajit luajit-51 luajit-5.1 lua51
 	HINTS
 		ENV LuajitPath${_lib_suffix}
 		ENV LuajitPath