[m-rev.] trivial diff: make trace/mercury_trace_source.h self-contained

[Simon Taylor]

Estimated hours taken: 0.1

mercury_trace_source.h:
	Make this file self-contained.

Index: mercury_trace_source.h
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace_source.h,v
retrieving revision 1.1
diff -u -u -r1.1 mercury_trace_source.h
--- mercury_trace_source.h	31 Oct 2001 17:53:52 -0000	1.1
+++ mercury_trace_source.h	2 Nov 2001 06:17:39 -0000
@@ -18,6 +18,8 @@
 #ifndef MERCURY_TRACE_SOURCE_H
 #define MERCURY_TRACE_SOURCE_H
 
+#include "mercury_std.h"	/* for bool */
+
 /*
 ** This holds the information for one server that the program is
 ** attached to.  The fields are:
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