Adding GME to NSI.

Also making mpg123 a dynamic library (since it's LGPL).

extra/nsis/love.nsi

@@ -42,6 +42,8 @@ Section "LOVE" MainProg
 	File "${LOVEBINDIR}\DevIL.dll"
 	File "${LOVEBINDIR}\SDL.dll"
 	File "${LOVEBINDIR}\OpenAL32.dll"
+	File "${LOVEBINDIR}\libmpg123.dll"
+	File "${LOVEBINDIR}\gme.dll"
 	# File "${LOVEBINDIR}\lua51.dll"
 	File "${LOVEICODIR}\love.ico"
 	File "${LOVEICODIR}\game.ico"
@@ -89,6 +91,8 @@ Section "Uninstall"
 	Delete $INSTDIR\"SDL.dll"
 	Delete $INSTDIR\"love.exe"
 	Delete $INSTDIR\"OpenAL32.dll"
+	Delete $INSTDIR\"libmpg123.dll"
+	Delete $INSTDIR\"gme.dll"
 	# Delete $INSTDIR\"lua51.dll"
 	Delete $INSTDIR\"game.ico"
 	Delete $INSTDIR\"love.ico"