fix build on older automake

Original commit message from CVS:
fix build on older automake

ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 8381c72..322b552 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2004-10-27  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* configure.ac:
+	* ext/cdaudio/Makefile.am:
+	* sys/Makefile.am:
+	  fix build on older automake
+
 2004-10-26  Wim Taymans  <wim@fluendo.com>
 
 	* ext/dv/gstdvdec.c: (gst_dvdec_video_getcaps),

configure.ac

diff --git a/configure.ac b/configure.ac
index d4e0525..f5bf7eb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -647,13 +647,14 @@
 
 dnl *** Video 4 Linux ***
 dnl for information about the header/define, see sys/v4l/gstv4lelement.h
-translit(dnm, m, l) AM_CONDITIONAL(USE_V4L, true)
-GST_CHECK_FEATURE(V4L, [Video 4 Linux], v4lsrc v4lmjpegsrc v4lmjpegsink, [
+dnl renamed to GST_V4L in accordance with V4L2 below
+translit(dnm, m, l) AM_CONDITIONAL(USE_GST_V4L, true)
+GST_CHECK_FEATURE(GST_V4L, [Video 4 Linux], v4lsrc v4lmjpegsrc v4lmjpegsink, [
   # first check X
-  HAVE_V4L="no"
+  HAVE_GST_V4L="no"
   if test "$HAVE_X" = "yes"
   then
-    AC_CHECK_DECL(VID_TYPE_MPEG_ENCODER, HAVE_V4L="yes", HAVE_V4L="no", [
+    AC_CHECK_DECL(VID_TYPE_MPEG_ENCODER, HAVE_GST_V4L="yes", HAVE_GST_V4L="no", [
 #include <sys/types.h>
 #define _LINUX_TIME_H
 #include <linux/videodev.h>
@@ -663,7 +664,8 @@
 
 dnl *** Video 4 Linux 2 ***
 dnl for information about the header/define, see sys/v4l2/gstv4l2element.h
-translit(dnm, m, l) AM_CONDITIONAL(USE_V4L2, true)
+dnl renamed to GST_V4L2 because of some conflict with kernel headers
+translit(dnm, m, l) AM_CONDITIONAL(USE_GST_V4L2, true)
 GST_CHECK_FEATURE(GST_V4L2, [Video 4 Linux 2], v4l2src, [
   HAVE_GST_V4L2="no"
   if test "$HAVE_X" = "yes"

sys/Makefile.am

diff --git a/sys/Makefile.am b/sys/Makefile.am
index a9b3576..e27534d 100644
--- a/sys/Makefile.am
+++ b/sys/Makefile.am
@@ -34,7 +34,7 @@
 SUNAUDIO_DIR=
 endif
 
-if USE_V4L
+if USE_GST_V4L
 V4L_DIR=v4l
 else
 V4L_DIR=