mauve.exp (test_mauve): Call `prune_warnings'.

mauve.exp (test_mauve): Call `prune_warnings'.

	* libjava.mauve/mauve.exp (test_mauve): Call `prune_warnings'.
	(test_mauve_sim): Likewise.
	(test_mauve): Redirect stderr in system call.
	(test_mauve_sim): Likewise.
	* lib/libjava.exp (test_libjava_from_source): Call
	`prune_warnings'.
	(test_libjava_from_javac): Likewise.
	(bytecompile_file): Redirect stderr in system call.
	* lib/libjava.exp (libjava_find_program): New proc.
	(find_jvscan): Use it.
	(find_gcjh): New proc.

	* libjava.compile/compile.exp: Use "", not $options.

From-SVN: r33959