Change IANA number in LDAP schemas from 3317 to 11344

No idea who 'Port Community Rotterdam' are, but we have our own IANA number, so should be using it.
Organise LDAP schemas better
Only include pcap.h if we have libpcap
Typo in clients schema
Import/Export from Apache DS to cleanup formatting
rlm_otp doesn't need a configure script
The last 2 functions require pcap.
Putting every source file on its own line makes it easier to resolve merge errors
Move net functions which don't depend on PCAP libraries into net.c
Remove redundant pcap.h include
Fix comment. Closes #745
it's OK for this->server to be NULL
Fix OpenSSL checks/linking in modules
Use PSK only if PSK is available
CN should not be required in radiusProfile schema
rename radiusProfileDn to radiusProfileDN