Remove redundant IS_LOCAL() checks discovered by static asserts
Add support for generating DANE TLSA records to genssl.
Document the Membership and the Invitation class
Remove needless checks from Invitation::Find()
m_ldap: time out LDAP queries

Set LDAP_OPT_NETWORK_TIMEOUT to 0 in m_ldap to prevent the asynchronous
library calls from blocking

Fix memory leak of pending queries when m_ldap is unloaded
Update core_stats.cpp

Make this consistent with other "Permission Denied" errors.
m_passforward: Don't forward password if the connect block required a password to connect
Replace the configure templating system with something better.

A large amount of this code can be removed when buildtool is done
as we will not need to worry about the differences between BSD and
GNU Make.
Prefix all definitions in config.h to avoid potential collisions.
Switch to std::string::compare() from substr() in a couple of places
m_ssl_gnutls Don't include cap.h

The tls cap is handled by m_starttls
m_ident: Add an option to allow idents of users to still be prefixed with a '~' for connect classes which have disabled ident lookups through the <connect:useident> setting.

Fixes #683.

Some changes by @attilamolnar, original PR #684
Describe <ident:nolookupprefix>
m_ident Make use of the min parameter of ConfigTag::getInt()