KalturaObjectBuilder bug fixes:  1. preUpdate and postUpdate should do nothing if alreadyInSave is true, otherwise in case of reentrancy (Baseentry::doSave -> Baseasset->doSave -> Baseentry::doSave) no event will be fired.  2. in preUpdate writing setUpdatedAt was optional (only if the table has updatedAt column) but the if isModified was always written
KalturaObjectBuilder bug fixes:
 1. preUpdate and postUpdate should do nothing if alreadyInSave is true, otherwise in case of reentrancy (Baseentry::doSave -> Baseasset->doSave -> Baseentry::doSave) no event will be fired.
 2. in preUpdate writing setUpdatedAt was optional (only if the table has updatedAt column) but the if isModified was always written

git-svn-id: 8a2ccb88241e16c78017770bc38d91d6d5396a5a@64225 6b8eccd3-e8c5-4e7d-8186-e12b5326b719

ivesbai/server,doubleshot/server,ivesbai/server,matsuu/server,doubleshot/server,DBezemer/server,DBezemer/server,doubleshot/server,DBezemer/server,gale320/server,jorgevbo/server,DBezemer/server,ratliff/server,kaltura/server,gale320/server,ratliff/server,kaltura/server,matsuu/server,DBezemer/server,jorgevbo/server,ivesbai/server,doubleshot/server,matsuu/server,ratliff/server,ratliff/server,ratliff/server,kaltura/server,matsuu/server,gale320/server,ivesbai/server,doubleshot/server,ratliff/server,jorgevbo/server,ratliff/server,ivesbai/server,gale320/server,jorgevbo/server,matsuu/server,jorgevbo/server,gale320/server,kaltura/server,jorgevbo/server,ivesbai/server,matsuu/server,gale320/server,ivesbai/server,matsuu/server,ratliff/server,DBezemer/server,matsuu/server,doubleshot/server,kaltura/server,DBezemer/server,doubleshot/server,jorgevbo/server,gale320/server,gale320/server,DBezemer/server,doubleshot/server,jorgevbo/server,ivesbai/server,kaltura/server