New putFile method which uses non referenceable oak:Resource nodetype

With OAK-4567 a new oak:Resource type is being introduced which is a replacement for nt:resource for cases where referenceable nodes are not required.

To make use of that we should add new variants of putFile in JcrUtil which make use of that

See also http://jackrabbit-oak.markmail.org/thread/qicpzm5ltnzfsd42