Fix uninstall target.

Author: petere

src/interfaces/ecpg/include/Makefile

@@ -28,6 +28,7 @@ installdirs:
 uninstall:
 	rm -f $(addprefix '$(DESTDIR)$(includedir)'/, $(ecpg_headers))
 	rm -f $(addprefix '$(DESTDIR)$(informix_esql_dir)'/, $(informix_headers))
+	rm -f '$(DESTDIR)$(includedir)'/$(notdir $(ecpg_config_h))
 
 distclean maintainer-clean:
 	rm -f ecpg_config.h