First pass at fixing tar segfault, and more portability updates.

-Erik

util-linux/mkfs_minix.c

@@ -74,6 +74,7 @@
 #include <termios.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
+#include <sys/param.h>
 #include <mntent.h>
 
 #include <linux/fs.h>
@@ -83,10 +84,6 @@
 #define HAVE_MINIX2 1
 #endif
 
-#ifndef __GNUC__
-#error "needs gcc for the bitop-__asm__'s"
-#endif
-
 #ifndef __linux__
 #define volatile
 #endif