src/file-io.cc patch

[Albert Chin]

src/file-io.cc makes uses of errno but never includes it. This causes
a failure on Solaris and Tru64 UNIX.

-- 
albert chin (address@hidden)

-- snip snip
Index: src/file-io.cc
===================================================================
RCS file: /cvs/octave/src/file-io.cc,v
retrieving revision 1.136
diff -u -3 -p -r1.136 file-io.cc
--- src/file-io.cc      2003/02/16 03:24:26     1.136
+++ src/file-io.cc      2003/02/19 21:31:44
@@ -49,6 +49,8 @@ Software Foundation, 59 Temple Place - S
 #include <unistd.h>
 #endif
 
+#include <errno.h>
+
 #include "file-ops.h"
 
 #include "defun.h"