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/amiga/amistack.c

@@ -1,4 +1,4 @@
-/* NetHack 3.6	amistack.c	$NHDT-Date$  $NHDT-Branch$:$NHDT-Revision$ */
+/* NetHack 3.6	amistack.c	$NHDT-Date: 1431192783 2015/05/09 17:33:03 $  $NHDT-Branch: master $:$NHDT-Revision: 1.7 $ */
 /* NetHack 3.6	amistack.c	$Date: 2009/05/06 10:48:30 $  $Revision: 1.4 $ */
 /* SCCS Id: @(#)amistack.c	3.5	2000/05/03			*/
 /* Copyright (c) Janne Salmijärvi, Tampere, Finland, 2000		*/
@@ -6,7 +6,7 @@
 
 /*
  * Increase stack size to allow deep recursions.
- * 
+ *
  * Note: This is SAS/C specific, using other compiler probably
  * requires another method for increasing stack.
  *
@@ -19,5 +19,5 @@
  * At the moment 90*1024 would suffice, but just to be on the safe side ...
  */
 
-long __stack = 128*1024; 
+long __stack = 128 * 1024;
 #endif