Clean up trailing whitespace in the kernel headers.

And fix the scripts so they stop letting trailing whitespace through.

Change-Id: Ie109fbe1f63321e565ba0fa60fee8e9cf3a61cfc
diff --git a/libc/kernel/arch-x86/asm/mman.h b/libc/kernel/arch-x86/asm/mman.h
index b0b4e1d..6f1d71e 100644
--- a/libc/kernel/arch-x86/asm/mman.h
+++ b/libc/kernel/arch-x86/asm/mman.h
@@ -19,17 +19,17 @@
 #ifndef _ASM_X86_MMAN_H
 #define _ASM_X86_MMAN_H
 #include <asm-generic/mman.h>
-#define MAP_32BIT 0x40  
+#define MAP_32BIT 0x40
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MAP_GROWSDOWN 0x0100  
-#define MAP_DENYWRITE 0x0800  
-#define MAP_EXECUTABLE 0x1000  
-#define MAP_LOCKED 0x2000  
+#define MAP_GROWSDOWN 0x0100
+#define MAP_DENYWRITE 0x0800
+#define MAP_EXECUTABLE 0x1000
+#define MAP_LOCKED 0x2000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MAP_NORESERVE 0x4000  
-#define MAP_POPULATE 0x8000  
-#define MAP_NONBLOCK 0x10000  
-#define MCL_CURRENT 1  
+#define MAP_NORESERVE 0x4000
+#define MAP_POPULATE 0x8000
+#define MAP_NONBLOCK 0x10000
+#define MCL_CURRENT 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MCL_FUTURE 2  
+#define MCL_FUTURE 2
 #endif