testsuite: Update py-mi-objfile to expect console format print

Starting with this commit:

  commit e7ea3ec7c623be0b9be1eaf4929794652a84be11
  Author: Catalin Udma <catalin.udma@freescale.com>
  Date:   Mon Feb 29 16:16:19 2016 +0200

    python: Use console format for output of gdb.execute command

the python script would use console format for gdb.execute output.
This patch fixes py-mi-objfile to expect the console format when is
checking for gdb.execute printing.

gdb/testsuite/ChangeLog:
2016-04-05  Catalin Udma  <catalin.udma@freescale.com>

        * gdb.python/py-mi-objfile-gdb.py: Use "list main" command.
        * gdb.python/py-mi-objfile.exp: Match "list main" output
        in console format.

Signed-off-by: Catalin Udma <catalin.udma@freescale.com>

gdb/testsuite/ChangeLog

@@ -1,3 +1,9 @@
+2016-04-05  Catalin Udma  <catalin.udma@freescale.com>
+
+	* gdb.python/py-mi-objfile-gdb.py: Use "list main" command.
+	* gdb.python/py-mi-objfile.exp: Match "list main" output
+	in console format.
+
 2016-04-05  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* gdb.arch/ftrace-insn-reloc.exp: Check for IPA basename instead of

gdb/testsuite/gdb.python/py-mi-objfile-gdb.py

@@ -22,6 +22,5 @@ import gdb
 # This will create one for to_string=True and then another for the
 # parameter change notification.
 gdb.execute("set width 101", to_string=True)
-# And finally a command that will use the original MI stream, which in a
-# buggy gdb will use just-freed data.
-gdb.execute("list")
+# And finally a command that will use the console stream without redirection
+gdb.execute("list main")

gdb/testsuite/gdb.python/py-mi-objfile.exp

@@ -53,5 +53,6 @@ if [is_remote host] {
 
 # PR 18833.  This will cause an unpatched gdb to crash.
 mi_gdb_test "-file-exec-and-symbols ${filename}" \
-    ".*\\^done,line=.*${srcfile}\"" \
+    ".*main \\(.*void\\).*\
+    return 0;.*\\^done" \
     "file-exec-and-symbols operation"