gapi.xsd: Fix type of array_len attribute in fieldType
gapi.xsd: Fix type of array_len attribute in fieldType

sillsdev/gtk-sharp,antoniusriha/gtk-sharp,antoniusriha/gtk-sharp,akrisiun/gtk-sharp,sillsdev/gtk-sharp,orion75/gtk-sharp,openmedicus/gtk-sharp,akrisiun/gtk-sharp,akrisiun/gtk-sharp,sillsdev/gtk-sharp,orion75/gtk-sharp,sillsdev/gtk-sharp,antoniusriha/gtk-sharp,akrisiun/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,akrisiun/gtk-sharp,openmedicus/gtk-sharp,orion75/gtk-sharp,openmedicus/gtk-sharp,orion75/gtk-sharp,antoniusriha/gtk-sharp,openmedicus/gtk-sharp,orion75/gtk-sharp,sillsdev/gtk-sharp,openmedicus/gtk-sharp,antoniusriha/gtk-sharp