While I'm here, also trim the headers on a couple of ports and remove
a reference to the Dragonlace mirror which is down indefinitely.
Approved by: bapt (mentor)
Comment out 2 demos that doesn't build
LDAP demo now builds
SSL demos are now switched properly
Supports USES+= ada
PR: ports/178164
Submitted by: John Marino <draco@marino.st>