Ensure that `msCopyLabel` copies `expression` and `text` directives
Fixed problems found in the mapfile.xsd while trying to convert current mapfiles into xmlmapfiles
Exposed labelObj.text and labelObj.expression in PHP/MapScript (closes #4310)
Exposed labelObj.text and labelObj.expression in PHP/MapScript (closes #4310)
Merge branch 'branch-6-2'
Move #4577 fixes out of libmapserver
Merge branch 'branch-6-2'