Fix NH-1770  (hard to test because, without another assembly, because it involve app.config; threre is an existing test about <session-factory> "optionability")
Fix NH-1770 
(hard to test because, without another assembly, because it involve app.config; threre is an existing test about <session-factory> "optionability")

SVN: 488784591515bd4cdaa016be4ec9b172dc4e7caf@4278

lnu/nhibernate-core,alobakov/nhibernate-core,ngbrown/nhibernate-core,nhibernate/nhibernate-core,gliljas/nhibernate-core,ManufacturingIntelligence/nhibernate-core,hazzik/nhibernate-core,RogerKratz/nhibernate-core,nkreipke/nhibernate-core,nhibernate/nhibernate-core,gliljas/nhibernate-core,ManufacturingIntelligence/nhibernate-core,ngbrown/nhibernate-core,alobakov/nhibernate-core,livioc/nhibernate-core,gliljas/nhibernate-core,nkreipke/nhibernate-core,fredericDelaporte/nhibernate-core,fredericDelaporte/nhibernate-core,nhibernate/nhibernate-core,RogerKratz/nhibernate-core,ngbrown/nhibernate-core,fredericDelaporte/nhibernate-core,fredericDelaporte/nhibernate-core,ManufacturingIntelligence/nhibernate-core,hazzik/nhibernate-core,RogerKratz/nhibernate-core,nhibernate/nhibernate-core,gliljas/nhibernate-core,lnu/nhibernate-core,hazzik/nhibernate-core,RogerKratz/nhibernate-core,hazzik/nhibernate-core,nkreipke/nhibernate-core,livioc/nhibernate-core,livioc/nhibernate-core,alobakov/nhibernate-core,lnu/nhibernate-core