change 3d icons, better distinction between required  and enhnaced, minor grammar correction

git-svn-id: http://svn.osgeo.org/postgis/trunk@11420 b70326c6-7e19-0410-871a-916f4a2858ee
update version number to beta1 in prep for tagging, upgrade from old dev, amendments to how to release, rebuild of unpackaged scripts

git-svn-id: http://svn.osgeo.org/postgis/trunk@11421 b70326c6-7e19-0410-871a-916f4a2858ee
fix booboo

git-svn-id: http://svn.osgeo.org/postgis/trunk@11422 b70326c6-7e19-0410-871a-916f4a2858ee
try again.  committed obsolete version last time.

git-svn-id: http://svn.osgeo.org/postgis/trunk@11423 b70326c6-7e19-0410-871a-916f4a2858ee