Reformat all C files.

I'll push a formatting guide at some point. There may still be
outstanding changes, but please feel free to resolve those as you arrive
a them.

To the best of my knowledge, there is no changes to the actual code
content, but the formatter does have the occasional bug. If you run into
an issue, please fix it!

sys/share/nhlan.c

@@ -1,4 +1,4 @@
-/* NetHack 3.6	nhlan.c	$NHDT-Date$  $NHDT-Branch$:$NHDT-Revision$ */
+/* NetHack 3.6	nhlan.c	$NHDT-Date: 1431192778 2015/05/09 17:32:58 $  $NHDT-Branch: master $:$NHDT-Revision: 1.8 $ */
 /* NetHack 3.6	nhlan.c	$Date: 2009/05/06 10:50:26 $  $Revision: 1.5 $ */
 /*	SCCS Id: @(#)nhlan.c	3.5	1999/11/21	*/
 /* Copyright (c) Michael Allison, 1997                  */
@@ -19,9 +19,10 @@
 
 #ifdef LAN_FEATURES
 
-void init_lan_features()
+void
+init_lan_features()
 {
-	lan_username();
+    lan_username();
 }
 /*
  * The get_lan_username() call is a required call, since some of
@@ -31,14 +32,16 @@ void init_lan_features()
 char lusername[MAX_LAN_USERNAME];
 int lusername_size = MAX_LAN_USERNAME;
 
-char *lan_username()
+char *
+lan_username()
 {
-	char *lu;
-	lu = get_username(&lusername_size);
-	if (lu) {
-	 Strcpy(lusername, lu);
-	 return lusername;
-	} else return (char *)0;
+    char *lu;
+    lu = get_username(&lusername_size);
+    if (lu) {
+        Strcpy(lusername, lu);
+        return lusername;
+    } else
+        return (char *) 0;
 }
 #endif /*LAN_FEATURES*/
 /*nhlan.c*/