configure.ac: remove whitespace

configure.ac: remove whitespace

Original commit message from CVS:
* configure.ac:
remove whitespace
* docs/gst/tmpl/gstbuffer.sgml:
* docs/gst/tmpl/gstdata.sgml:
* docs/gst/tmpl/gstreamer-unused.sgml:
* docs/gst/tmpl/gstxml.sgml:
doc update
* docs/manuals.mak:
add a FIXME
* docs/pwg/intro-preface.xml:
* docs/pwg/pwg.xml:
remove GNOME
* gst/gst.c: (init_post):
try GST_PLUGIN_PATH paths for the _global_registry first
* gst/gstelement.h:
add the error message as well, otherwise (null) debug info doesn't
make much sense
* tools/gst-register.c: (main):
spill paths to next registry if this registry is not writable
* po/fr.po:
* po/nl.po:
translation updates