fixing warnings:

- no previous declaration for ‘_isatty’
- implicit declaration of function ‘_isatty’

modified:
  storage/connect/fmdlex.c
  storage/connect/osutil.c

storage/connect/fmdlex.c

@@ -24,6 +24,9 @@
 #define __STDC__ 1
 #endif
 #include <stdio.h>
+#ifndef defined(WIN32)
+#include <unistd.h>
+#endif
 
 
 /* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
@@ -392,7 +395,6 @@ char *yytext;
 #include <string.h>
 #include "preparse.h"
 
-#define isatty _isatty
 #define fileno _fileno
 #undef  YY_DECL
 #define YY_DECL int yylex YY_PROTO((PDTP ppp))

storage/connect/osutil.c

@@ -202,11 +202,6 @@ BOOL MessageBeep(uint i)
   return TRUE;
   } /* end of MessageBeep */
 
-int _isatty(int fileNo) 
-  {
-  return isatty(fileNo);
-  }  /* end of _isatty */
-
 #if 0
 /* This function is ridiculous and should be revisited */
 DWORD FormatMessage(DWORD dwFlags, LPCVOID lpSource, DWORD dwMessageId,