Make ffmpeg use cmdutils.c show_license function

patch by Stefano Sabatini: [stefano sabatini minus lala ! poste it]

Originally committed as revision 10182 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -3742,39 +3742,7 @@ static void show_banner(void)
 
 static void opt_show_license(void)
 {
-#ifdef CONFIG_GPL
-    printf(
-    "FFmpeg is free software; you can redistribute it and/or modify\n"
-    "it under the terms of the GNU General Public License as published by\n"
-    "the Free Software Foundation; either version 2 of the License, or\n"
-    "(at your option) any later version.\n"
-    "\n"
-    "FFmpeg is distributed in the hope that it will be useful,\n"
-    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
-    "GNU General Public License for more details.\n"
-    "\n"
-    "You should have received a copy of the GNU General Public License\n"
-    "along with FFmpeg; if not, write to the Free Software\n"
-    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
-    );
-#else
-    printf(
-    "FFmpeg is free software; you can redistribute it and/or\n"
-    "modify it under the terms of the GNU Lesser General Public\n"
-    "License as published by the Free Software Foundation; either\n"
-    "version 2.1 of the License, or (at your option) any later version.\n"
-    "\n"
-    "FFmpeg is distributed in the hope that it will be useful,\n"
-    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
-    "Lesser General Public License for more details.\n"
-    "\n"
-    "You should have received a copy of the GNU Lesser General Public\n"
-    "License along with FFmpeg; if not, write to the Free Software\n"
-    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
-    );
-#endif
+    show_license();
     exit(0);
 }