Convert personality_options to XLAT form

* linux/personality.h: New file.
* Makefile.am (EXTRA_DIST): Add it.
* system.c: Include <linux/personality.h>.
(personality_options): Update PER_* constants, convert to XLAT form.
diff --git a/Makefile.am b/Makefile.am
index 90f333d..2ba30f6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -125,6 +125,7 @@
 	linux/mtd-abi.h			\
 	linux/or1k/ioctlent.h.in	\
 	linux/or1k/syscallent.h		\
+	linux/personality.h		\
 	linux/powerpc/errnoent1.h	\
 	linux/powerpc/ioctlent.h.in	\
 	linux/powerpc/ioctlent1.h	\