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/pgtable_32.h b/libc/kernel/arch-x86/asm/pgtable_32.h
index 4740571..64b6978 100644
--- a/libc/kernel/arch-x86/asm/pgtable_32.h
+++ b/libc/kernel/arch-x86/asm/pgtable_32.h
@@ -58,10 +58,10 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_BIT_ACCESSED 5
 #define _PAGE_BIT_DIRTY 6
-#define _PAGE_BIT_PSE 7  
-#define _PAGE_BIT_GLOBAL 8  
+#define _PAGE_BIT_PSE 7
+#define _PAGE_BIT_GLOBAL 8
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define _PAGE_BIT_UNUSED1 9  
+#define _PAGE_BIT_UNUSED1 9
 #define _PAGE_BIT_UNUSED2 10
 #define _PAGE_BIT_UNUSED3 11
 #define _PAGE_BIT_NX 63
@@ -74,15 +74,15 @@
 #define _PAGE_PCD 0x010
 #define _PAGE_ACCESSED 0x020
 #define _PAGE_DIRTY 0x040
-#define _PAGE_PSE 0x080  
+#define _PAGE_PSE 0x080
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define _PAGE_GLOBAL 0x100  
-#define _PAGE_UNUSED1 0x200  
+#define _PAGE_GLOBAL 0x100
+#define _PAGE_UNUSED1 0x200
 #define _PAGE_UNUSED2 0x400
 #define _PAGE_UNUSED3 0x800
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define _PAGE_FILE 0x040  
-#define _PAGE_PROTNONE 0x080  
+#define _PAGE_FILE 0x040
+#define _PAGE_PROTNONE 0x080
 #define _PAGE_NX 0
 #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */