1) Revert partly 56877887
UseKeywordAsBeforeAlias should be put to true in Features section
(see https://gerrit.libreoffice.org/#/c/61144/)

2) Fix BooleanComparisonMode
Use xs:int for Properties part but stay with xs:boolean in Features
(see https://gerrit.libreoffice.org/#/c/61144/ again)

Change-Id: I4397327ceef408be9ee0563f25fe700c1bfd82d3
TODO: add README in connectivity/registry to provide some info
Reviewed-on: https://gerrit.libreoffice.org/61271
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>