additional cleanups for pgport find_my_exec support

Clean up configure messaging and avoid a compiler warning by
checking for HAVE_PGPORT after config.h is included
(cherry picked from commit be93380)

Conflicts:

	RELEASE
	src/slonik/slonik.c

RELEASE

@@ -1,6 +1,9 @@
 #+OPTIONS: ^:{}
 * Slony-I Release Notes
 
+- No bug :: add --with-pgport option to configure and when set to yes let slonik use these functions to determine
+            the PGSHARE directory at runtime. This defaults to no 
+
 - Bug #240 :: Improve notes on VACUUM
 
 - Bug #278 :: assorted spelling fixes

config/acx_libpq.m4

@@ -510,7 +510,9 @@ if test "$with_pgport" = "yes"; then
    AC_MSG_CHECKING(for pgport)
    AC_DEFINE(HAVE_PGPORT)
    LIBS="$LIBS -lpgport"
-   AC_TRY_LINK_FUNC(find_my_exec,HAVE_PGPORT=1, AC_MSG_ERROR("pgport was not found. build without --with-pgport=yes to disable"))
+   AC_TRY_LINK_FUNC(find_my_exec,[HAVE_PGPORT=1
+                                  AC_MSG_RESULT(yes)], 
+                    AC_MSG_ERROR("pgport was not found. build without --with-pgport=yes to disable"))
 fi
 
 AC_LANG_RESTORE

src/slonik/slonik.c

@@ -33,10 +33,6 @@
 #include "libpq-fe.h"
 #include "slonik.h"
 
-#ifdef HAVE_PGPORT
-#undef USE_REPL_SNPRINTF
-#include "port.h"
-#endif
 
 #ifdef MSVC
 #include "config_msvc.h"
@@ -46,6 +42,12 @@
 #include "../parsestatements/scanner.h"
 extern int	STMTS[MAXSTATEMENTS];
 
+
+#ifdef HAVE_PGPORT
+#undef USE_REPL_SNPRINTF
+#include "port.h"
+#endif
+
 #define MAXPGPATH 256
 
 /*