Update README to give valid PKG_CONFIG_PATH instructions

Original commit message from CVS:
Update README to give valid PKG_CONFIG_PATH instructions

ChangeLog

@@ -1,3 +1,9 @@
+2005-01-09  Maciej Katafiasz <mathrick@freedesktop.org>
+
+	* README: fix PKG_CONFIG_PATH instructions, what was there
+	previously was breaking default search path, not nice. 
+	Fixes #163358
+
 2005-01-09  Ronald S. Bultje  <rbultje@ronald.bitfreak.net>
 
 	* gst/audioscale/gstaudioscale.c: (gst_audioscale_init),

README

@@ -9,11 +9,13 @@ COMPILING FROM SOURCE
 - configure the source tree:
   - if you installed GStreamer, then do:
       ./configure
-    If configure complains about missing GStreamer, you should try
-      ./configure --with-pkg-config-path=prefix/lib/pkgconfig
+    If configure complains about missing GStreamer, you should try the 
+    following command:
+    $export PKG_CONFIG_PATH=prefix/lib/pkgconfig
     where prefix should be replaced by the prefix you used to configure
-    GStreamer.  (Be mindful NOT to ADD a trailing / to that option !)
-    If this doesn't fix it, you have other issues ;)
+    GStreamer. (Be mindful NOT to ADD a trailing / to that option !).
+    After that, rerun ./configure. If this doesn't fix it, you have other
+    issues ;)
 
   - if you didn't install GStreamer, you can still compile the plug-ins.
     Add the path to gstreamer-uninstalled.pc (which lives in the gstreamer