Replace FSF street address with canonical URL

As recommended in http://www.gnu.org/licenses/gpl-howto.en.html.

This is the result of:
$ git grep -El Mass\|Temple\|Franklin | xargs ./fsf.pl

Where fsf.pl is:
    #!/usr/bin/perl -w -pi.bak -0777
    my $repl = 'If not, see <http://www.gnu.org/licenses/>.';
    my $br = qr/(?:\s*\n\s*(?:[\*\#]|\/\/|\.\\" )?\s*|\s+)/;

    my $inwt = qr/[Ii]f${br}not,${br}write${br}(?:to${br})?the${br}Free${br}Software${br}Foundation,(?:${br}Inc\.,)?/;

    my $mass = qr/675${br}Mass${br}Ave,?${br}Cambridge,?${br}MA${br}02139,?${br}USA,?\.?/;
    my $franklin = qr/51${br}Franklin${br}St(?:reet)?(?:,${br}| - )Fifth${br}Floor,?${br}Boston,?${br}MA,?${br}02110-1301,?${br}USA,?\.?/;
    my $temple = qr/59${br}Temple${br}Place(?:,${br}| - )Suite${br}330,?${br}Boston,?${br}MA,?${br}021110?-1307,?${br}USA,?\.?/;

    s|$inwt$br$mass|$repl|m;
    s|$inwt$br$franklin|$repl|m;
    s|$inwt$br$temple|$repl|m;

The only remaining mentions of these addresses are in COPYING files which I
haven't touched.

Some of the changed files are imports from elsewhere, however
filtering them out is tricky, I think it is tolerable to have these
files be modified here and then perhaps reverted on the next sync,
since it's only 1-2 lines and obvious what is going on.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

tools/debugger/gdbsx/gx/gx.h

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 typedef uint16_t domid_t;

tools/debugger/gdbsx/gx/gx_comm.c

@@ -15,9 +15,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program; If not, see <http://www.gnu.org/licenses/>.  */
 /*
  * Copyright (C) 2009, Mukesh Rathor, Oracle Corp.  All rights reserved.
  *
@@ -31,9 +29,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* This module handles communication with remote gdb.  courtesy 

tools/debugger/gdbsx/gx/gx_local.c

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 

tools/debugger/gdbsx/gx/gx_main.c

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* This module is the main module for gdbsx implementation. gdbsx is a remote

tools/debugger/gdbsx/gx/gx_utils.c

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <stdio.h>

tools/debugger/gdbsx/gx/xg_dummy.c

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 #include <stdio.h>
 #include <stddef.h>

tools/debugger/gdbsx/xg/xg_main.c

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* This is the main module to interface with xen. This module exports APIs that

tools/debugger/gdbsx/xg/xg_public.h

@@ -11,9 +11,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
+ * License along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 #define XGERR(...)   \