sys/reg apparently only exists on i386 and m68k, so fix the test in
a couple of files
diff --git a/syscall.c b/syscall.c
index 91bdd8b..3d9ee95 100644
--- a/syscall.c
+++ b/syscall.c
@@ -37,7 +37,7 @@
 #include <sys/user.h>
 #include <sys/syscall.h>
 #include <sys/param.h>
-#if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1
+#if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 && (defined(I386) || defined(M68K))
 # include <sys/reg.h>
 #endif