Initial wfs2 commit with GetCapabilities, DescribeFeatureType and GetFeature/GML3.2 support
Merge branch 'master' into wfs2

Conflicts:
	msautotest
Update msautotest to latest rev
Implement Inspire extensions for WFS 2.0
Add support for FE 2.0, and sanitize filter support, particularly related to SRS handling
WFS: fix #3319 (optional/mandatory attributes by introducing gml_optional_items, gml_mandatory_items and gml_default_items) and #3563 (PropertyName should check gml_include_items/gml_exclude_items)
Update msautotest to 070b4277eed2cb212cba1c907ab98a0aee5c9e48
WFS 2.0: implement GetPropertyValue request
WFS: add support for PropertyName/ValueReference/Filter parameters in gml_groups
Fix segfault when GetFeature on a invalid typename on a multi-layer map
WFS 2.0: implement stored queries; also fix maximum feature count support for GetFeature involving filters or featureid
Fix compilation and warning problems when disabling libxml2 and/or OGR
WFS: fix segfault when issuing GetFeature on a layer that can't be opened
Filter: support BBOX without PropertyName, as allowed since FE 1.1.0
Centralize OWS exceptionCode values as #define and use them in WFS server implementaton
WFS: use 'srsname' locator instead of 'typename' when issuing an exception about the SRSNAME parameter
WFS: deal with multiple <Query> in a stored query
WFS: add support for During time filtering
Update to latest wfs2 msautotest
WFS: implements SortBy