configure.ac: Use pkg-config to detect presence of libgme

Use the existing pkg-config file to detect presence of libgme. This file
is already shipped on all known libgme versions (checked back until
0.6.0, which is from 2015).

This fixes build with recent libgme versions, which added even more
dependencies which were missing in the old check.

Fixes #27262

configure.ac

@@ -2203,26 +2203,7 @@ AM_CONDITIONAL([HAVE_DVBPSI], [test "${have_dvbpsi}" = "yes"])
 dnl
 dnl  GME demux plugin
 dnl
-AC_ARG_ENABLE([gme],
-  AS_HELP_STRING([--enable-gme],
-    [use Game Music Emu (default auto)]))
-AS_IF([test "${enable_gme}" != "no"], [
-  AC_CHECK_HEADER([gme/gme.h], [
-    AC_CHECK_LIB([gme], [gme_identify_header], [
-      VLC_ADD_PLUGIN([gme])
-    ], [
-      AC_CHECK_LIB([gme], [gme_identify_extension], [
-         VLC_ADD_LIBS([gme], [-lstdc++ $LIBM])
-         VLC_ADD_PLUGIN([gme])
-      ],, [-lstdc++ $LIBM])
-    ])
-    VLC_ADD_LIBS([gme], [-lgme])
-  ], [
-    AS_IF([test "x${enable_gme}" != "x"], [
-      AC_MSG_ERROR([GME cannot be found. Please install the development files.])
-    ])
-  ])
-])
+PKG_ENABLE_MODULES_VLC([GME], [], [libgme], [Game Music Emu support (default auto)], [auto])
 
 
 dnl