the gist is: move pdns_recursor over to new {zone,packet}-{parser,generator} stuff

the gist is: move pdns_recursor over to new {zone,packet}-{parser,generator} stuff
this means the pdns_recursor does not use DNSPacket anymore (yay)
Commit adds:
	d_qtype storage to all DNSRecordContent classes
	infrastructure to extract *only* the record for a packet, assuming it came with a qname
	add reportAllTypes() if you want to be able to parse all types,
		reportBasicTypes() for the pdns_recursor
		reportOtherTypes() if you want the rest too
	updates Makefile.am so everything compiles again
	fix endian issues in packetwriter/parser
 	remove virtualness/inheritance from the pdns_recursor storage cache (teeny speedup)
Things might be a bit scary in the recursor now.

git-svn-id: svn://svn.powerdns.com/pdns/trunk/pdns@514 d19b8d6e-7fed-0310-83ef-9ca221ded41b