Clean out querydsl-sql dependencies
Clean out querydsl-sql dependencies

 - make querydsl-spatial optional (in my opinion sql-spatial should be a 
   separate module)
 - remove com.vividsolutions:jts dependency: I do not know why it is 
   there. All tests run well and compilation ok if I remove it
 - replace javax.validation to a version that contains OSGi manifest 
   headers
 - replace javax.inject to the servicemix bundle as it contains OSGi 
   headers
 - make javax.inject optional
 - make postgresql dependency optional
 - make postgis dependency optional
 - make oracle dependencies optiona
pkcool/querydsl,querydsl/querydsl,johnktims/querydsl,izeye/querydsl,robertandrewbain/querydsl,tomforster/querydsl,gordski/querydsl,mdiazf/querydsl,pkcool/querydsl,dharaburda/querydsl,robertandrewbain/querydsl,querydsl/querydsl,attila-kiss-it/querydsl,lpandzic/querydsl,balazs-zsoldos/querydsl,lpandzic/querydsl,mdiazf/querydsl,mosoft521/querydsl,lpandzic/querydsl,johnktims/querydsl,mdiazf/querydsl,vveloso/querydsl,tomforster/querydsl,gordski/querydsl,robertandrewbain/querydsl,tomforster/querydsl,kevinleturc/querydsl,kevinleturc/querydsl,vveloso/querydsl,izeye/querydsl,balazs-zsoldos/querydsl,gordski/querydsl,attila-kiss-it/querydsl,kevinleturc/querydsl,querydsl/querydsl,mosoft521/querydsl,lpandzic/querydsl,Log10Solutions/querydsl,dharaburda/querydsl,dharaburda/querydsl,mosoft521/querydsl,Log10Solutions/querydsl,vveloso/querydsl,izeye/querydsl,attila-kiss-it/querydsl,johnktims/querydsl,querydsl/querydsl,pkcool/querydsl,Log10Solutions/querydsl,balazs-zsoldos/querydsl