Fix: Compilation error on XSLT with includes (previous fix not quite correct).
Fix: Compilation error on XSLT with includes (previous fix not quite correct).

arekbee/msbuildtasks,loresoft/msbuildtasks,wrozmiarek/msbuildtasks,AArnott/msbuildtasks,stimpy77/msbuildtasks,jricke/msbuildtasks,smallkid/msbuildtasks