I had forgotten to add pipecom.h

Moreover, I got fed up with error due to const/non const, so I modified
PipeComSend to take a const argument. THe consequence is that it will not run
under plain C any more.

eo/src/utils/pipecom.h

@@ -0,0 +1,48 @@
+/* ----------------------------------------------------------------------
+ * Where........: CMAP - Polytechnique 
+ * File.........: pipecom.h
+ * Author.......: Bertrand Lamy (EEAAX)
+ * Created......: Thu Mar  9 17:21:15 1995
+ * Description..: Pipe communication with a process
+ * 
+ * Ident........: $Id: pipecom.h,v 1.2 2001-02-09 05:09:26 evomarc Exp $
+ * ----------------------------------------------------------------------
+ */
+
+#ifndef PIPECOM_H
+#define PIPECOM_H
+
+// this file cannot be used from C or C++ any more due to some const additions
+// however, if you remove the const, it should work in C also
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+
+
+typedef struct PipeCommunication { 
+    FILE	*fWrit;
+    FILE	*fRead;
+    int		pid;
+} PCom;
+    
+
+
+PCom *PipeComOpen( char *prog );
+PCom *PipeComOpenArgv( char *prog, char *argv[] );
+
+int PipeComSend( PCom *to, const char *line );
+int PipeComSendn( PCom *to, const char *data, int n );
+
+int PipeComReceive( PCom *from, char *data, int max );
+
+int PipeComClose( PCom *to );
+
+int PipeComWaitFor( PCom *from, char *what );
+
+#ifdef __cplusplus
+} /* ferme extern "C" */
+#endif
+
+#endif	/* 		PIPECOM_H */