gnuplot update

ChangeLog

@@ -1,3 +1,9 @@
+2010-01-01 Holger Vogt
+ * winmain.c: internal system() no longer needed, its available
+   in mingw and MS Visual Studio.
+   gnuplot.c: small update, call to gnuplot tested up to ver. 4.2.6,
+   does not work for Windows and gnuplot 4.4.
+
 2010-01-01 Holger Vogt
  * spinit.in: Small update
    gnuplot.c: calling gnuplot via xterm

src/frontend/plotting/gnuplot.c

@@ -209,10 +209,13 @@ ft_gnuplot(double *xlims, double *ylims, char *filename, char *title, char *xlab
     (void) fclose( file_data );
 
 #if defined(__MINGW32__) || defined(_MSC_VER)
-    (void) sprintf( buf, "start /B wgnuplot %s -" ,  filename_plt );
+    /* for external fcn system() */
+//    (void) sprintf( buf, "start /B wgnuplot %s -" ,  filename_plt );
+	(void) sprintf( buf, "start /B wgnuplot -persist %s " ,  filename_plt );	
     _flushall();
 #else
-    (void) sprintf( buf, "xterm -e gnuplot %s - &", filename_plt );
+	/* for external fcn system() from LINUX environment */
+	(void) sprintf( buf, "xterm -e gnuplot %s - &", filename_plt );
 #endif
     err = system( buf );
 

src/winmain.c

@@ -1338,7 +1338,7 @@ size_t _memavl(void)
     sum = ms.dwAvailPhys + ms.dwAvailPageFile;
     return (size_t) sum;
 }
-*/
+
 // ---------------------<Aufruf eines anderen Programms>-----------------------
 #ifndef _MSC_VER
 int system( const char * command)
@@ -1386,7 +1386,7 @@ int system( const char * command)
     return 0;
 } // system Windows95
 #endif
-
+*/
 /* Strip leading spaces, return a copy of s */
 char* rlead(char *s)
 {