2013-07-24  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* config/tc-s390.c (s390_machine): Don't force the .machine
	argument to lower case.
gdb/testsuite/

	* gdb.mi/mi-var-cmd.exp: If host is remote, use ${testfile} on
	host.
	* gdb.mi/mi-basics.exp (test_exec_and_symbol_mi_operatons):
	Likewise.  If host is remote, copy ${binfile} to host.