Nuked almost all trailing white space.

We better do this once and for all instead of cluttering all future
commits with diffs of trailing white spaces.  In the majority of cases
blank or single lines are affected and thus this change won't disturb
a git blame too much.  For future commits the pre-commit scripts
checks that this won't happen again.

tools/sockprox.c

@@ -15,7 +15,7 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-/* Hacked by Moritz Schulte <moritz@g10code.com>. 
+/* Hacked by Moritz Schulte <moritz@g10code.com>.
 
    Usage example:
 
@@ -24,10 +24,10 @@
    sockprox opens a new local socket (here "mysock"); the whole
    traffic between server and client is written to "/tmp/prot" in this
    case.
-  
+
      ./sockprox --server /tmp/gpg-PKdD8r/S.gpg-agent.ssh \
                 --listen mysock --protocol /tmp/prot
-  
+
    Then, redirect your ssh-agent client to sockprox by setting
    SSH_AUTH_SOCK to "mysock".
 */
@@ -441,7 +441,7 @@ run_proxy (void)
   /* ? */
 
  out:
-  
+
   pthread_attr_destroy (&thread_attr);
   fclose (protocol_file);	/* FIXME, err checking.  */