[PATCH 1.3.2] Fix compilation on MIPS (and possibly SPARC)

[Atsushi Nemoto]

e2fsprogs/ext2fs/unix_io.c checks SIZEOF_LONG on MIPS and SPARC, but
it seems nobody defines such macro.  It was not noticed before just
because we did not use -Wundef.  We can use __WORDSIZE instead of
SIZEOF_LONG (at least on glibc and uClibc).

--- busybox-1.3.2.org/e2fsprogs/ext2fs/unix_io.c	2007-01-21 05:16:54.000000000 +0900
+++ busybox-1.3.2/e2fsprogs/ext2fs/unix_io.c	2007-01-28 01:11:34.483145453 +0900
@@ -419,7 +419,7 @@
 
 #ifdef __linux__
 #undef RLIM_INFINITY
-#if (defined(__alpha__) || ((defined(__sparc__) || defined(__mips__)) && (SIZEOF_LONG == 4)))
+#if (defined(__alpha__) || ((defined(__sparc__) || defined(__mips__)) && (__WORDSIZE == 32)))
 #define RLIM_INFINITY	((unsigned long)(~0UL>>1))
 #else
 #define RLIM_INFINITY  (~0UL)