Update news/docs for 2.0.4 release


git-svn-id: http://svn.osgeo.org/postgis/branches/2.0@11933 b70326c6-7e19-0410-871a-916f4a2858ee
#2396, pass big-endian online regression tests


git-svn-id: http://svn.osgeo.org/postgis/branches/2.0@11934 b70326c6-7e19-0410-871a-916f4a2858ee