Throw a ParseException on missing chars from HEXWKB string (#675)

Includes testcase.

git-svn-id: http://svn.osgeo.org/geos/branches/3.3@3968 5242fede-7e19-0410-aef8-94bd7d2200fb
Fix release date for 3.3.9

git-svn-id: http://svn.osgeo.org/geos/branches/3.3@3969 5242fede-7e19-0410-aef8-94bd7d2200fb
Add entry about HEXWKB parser robustness improvement

git-svn-id: http://svn.osgeo.org/geos/branches/3.3@3970 5242fede-7e19-0410-aef8-94bd7d2200fb