cmake: Change library discovery order in LuaJIT find module

To ensure that the find module prefers the variant of LuaJIT shipped
as part of obs-deps, it's necessary to give the name as shipped in
obs-deps the highest precedence.

This ensures that the "find_library" call will discover the less
version-specific variant of the library possibly installed via
Homebrew.

cmake/finders/FindLuajit.cmake

@@ -94,7 +94,7 @@ endif()
 
 find_library(
   Luajit_LIBRARY
-  NAMES luajit luajit-51 luajit-5.1 lua51
+  NAMES luajit-5.1 luajit-51 luajit lua51
   HINTS ${PC_Luajit_LIBRARY_DIRS}
   PATHS /usr/lib /usr/local/lib
   DOC "Luajit location"