tdf#115968: make libcmis work better with CIB doxima

Change-Id: I1758bcee9a191937ed265dc26212f259a59fffef
Reviewed-on: https://gerrit.libreoffice.org/50231Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

external/libcmis/libcmis-fix-error-handling.patch

@@ -17,4 +17,16 @@ diff -ur cmis.org/src/libcmis/xml-utils.cxx cmis/src/libcmis/xml-utils.cxx
          string timeStr = dateTimeStr.substr( teePos + 1 );
  
          // Get the TZ if any
-
+@@ -459,10 +459,9 @@
+         bool value = false;
+         if ( boolStr == "true" || boolStr == "1" )
+             value = true;
+-        else if ( boolStr == "false" || boolStr == "0" )
+-            value = false;
+         else
+-            throw Exception( string( "Invalid xsd:boolean input: " ) + boolStr );
++            // treat everthing else, including absence of property, as 'false', not as an error
++            value = false;
+         return value;
+     }
+