Not all systems put true and false in /bin... so let $PATH work for us

and not hardcode /bin/true or /bin/false in the configure.ac
This updates the changes from r22113.

This commit was SVN r22130.

The following SVN revision numbers were found above:
  r22113 --> open-mpi/ompi@214e26b539

configure.ac

@@ -59,8 +59,8 @@ m4_pattern_allow([m4_ifval])
 AC_SUBST([CONFIGURE_DEPENDENCIES], ['$(top_srcdir)/VERSION'])
 
 # Set up project specific AM_CONDITIONALs
-AM_CONDITIONAL([PROJECT_OMPI], m4_ifdef([project_ompi], [/bin/true], [/bin/false]))
-AM_CONDITIONAL([PROJECT_ORTE], m4_ifdef([project_orte], [/bin/true], [/bin/false]))
+AM_CONDITIONAL([PROJECT_OMPI], m4_ifdef([project_ompi], [true], [false]))
+AM_CONDITIONAL([PROJECT_ORTE], m4_ifdef([project_orte], [true], [false]))
 
 #
 # Start it up