fixing up X test and general features test

Original commit message from CVS:
fixing up X test and general features test

ChangeLog

@@ -1,3 +1,9 @@
+2003-12-03  set REAL_NAME environment variable  <thomas at apestaart dot org>
+
+	* common/m4/gst-feature.m4: *** instead of newline when not built
+	* configure.ac: fix X detection when no X stuff present
+	* gst-libs/gst/Makefile.am: put X dependencies inside conditional
+
 2003-07-12  Thomas Vander Stichele <thomas at apestaart dot org>
 
         * gst-plugins.spec.in: fix up spec file

common

@@ -1 +1 @@
-Subproject commit b5288e8215c6eacf0782880f6c5b6dea8f445a34
+Subproject commit fcdc6ccbcc674dd487021d87a0313abf02bae396

configure.ac

@@ -489,9 +489,13 @@ dnl		;;
 ])
 
 dnl Check for X11
+translit(dnm, m, l) AM_CONDITIONAL(USE_X, true)
+GST_CHECK_FEATURE(X, [X libraries and plugins],
+                  [ximagesink], [
   AC_PATH_XTRA
-if test "-DX_DISPLAY_MISSING" = "$X_CFLAGS"; then
-  AC_MSG_NOTICE([cannot find X11, the build system needs fixage])
+  if test "x$X_CFLAGS" == "x" -o "$X_CFLAGS" == "-DX_DISPLAY_MISSING"
+  then
+    AC_MSG_NOTICE([cannot find X11 development files])
     HAVE_X="no"
   else
     dnl this is much more than we want
@@ -501,10 +505,10 @@ else
     X_LIBS="$X_LIBS -lX11"
     AC_SUBST(X_CFLAGS)
     AC_SUBST(X_LIBS)
-  HAVE_X="yes";
+    HAVE_X="yes"
   fi
   AC_SUBST(HAVE_X)
-AM_CONDITIONAL(USE_X, test "-DX_DISPLAY_MISSING" != "$X_CFLAGS")
+])
   
 dnl *** XVideo ***
 dnl Look for the PIC library first, Debian requires it.

gst-libs/gst/Makefile.am

@@ -5,7 +5,7 @@ GCONF_DIR=
 endif
 
 if USE_X
-X_DIR=xwindowlistener
+X_DIR=xwindowlistener xoverlay
 else
 X_DIR=
 endif
@@ -14,7 +14,7 @@ SUBDIRS = audio colorbalance floatcast \
 		$(GCONF_DIR) idct media-info \
 		mixer navigation play propertyprobe \
 		resample riff tuner video \
-		xoverlay $(X_DIR)
+		$(X_DIR)
 
 DIST_SUBDIRS = audio colorbalance floatcast \
 		gconf idct media-info \