Prefer binary ObjectIdentifier byte sequences over the text format

Postpone text format production as much as possible.
When producing branches on ASN1ObjectIdentifier, support "int" and
"long" as branch points, one or two at the time. Also minimize memory
garbage production when doing a branch (except with String forms).

Conflicts:
	core/src/main/java/org/bouncycastle/asn1/DERObjectIdentifier.java