Added IN_UPPERCASE property/assignment option to disable automatic upper-case storage (especially useful for flat-storage properties that are already in upper case, this also disables the explicit UPPER(...) wrapping in FxSQL queries, allowing better index usage)

git-svn-id: http://svn.flexive.org/repository/flexive/trunk@3016 d35d4baa-7912-0410-b0ae-edacad209e15
FxSQL: include invalid XPath in exception

git-svn-id: http://svn.flexive.org/repository/flexive/trunk@3017 d35d4baa-7912-0410-b0ae-edacad209e15