fixups for master of #4789
update cmake options and documentation (#4784)

closes #4784
WFS: use correct XSD datatypes in DescribeFeatureType response (#4800)
WFS: use correct XSD datatypes in DescribeFeatureType response (#4800)
Update msautotest to latest rev (#4800)
Update msautotest to latest rev (#4800)
Update msautotest to latest rev (#4800)
Update msautotest to latest rev
Update msautotest to latest rev
Install python-lxml
Update msautotest to latest rev
Fix csharp builds for MSVC71
Fix ms cmake build
Fix SLD PerpendicularOffset for lines and labels (#4801)

also use #defines instead of 99/-99 for label offsets
Merge branch 'branch-6-4'

Conflicts:
	mapprimitive.c
Make label expressions consistent with class expressions by allowing them to work off an item (labelitem).