Fix typo in helpop-full that prevented it from loading and other minor helpop issues
Fix IPv6 address handling in 6aaf7047297b739377e7d509cb914f32447fb281
Release 2.0.16
Correct the syntax messages of a few modules.
Some more helpop config updates.
Merge pull request #827 from Robby-/insp20-helpopconf

Some more helpop config updates, and fix a few module syntax messages.
m_watch Be more strict when checking whether the watch list of a user is full

After a rehash MAX_WATCH can become lower than it was before
Filter out newlines from error messages on Windows
Change FormatMessage() usage in DLLManager::RetrieveLastError() to match SocketEngine::LastError()

See 4451fd13a1accec8d7c2b1bb7fdafd6e50a2566b
m_ojoin Remove pointless FindChan() call

Found by Coverity, CID: 1135649
Ignore NULL callbacks in ModuleManager::Reload()

Found by Coverity, CID: 1201453
m_auditorium Handle NULL return from Channel::GetUser() in OnSendWhoLine()

Found by Coverity, CID: 1135647
Allow uppercase letters in IPv6 CIDR masks
m_ssl_openssl Avoid Applink on Windows by calling PEM_read_bio_DHparams() instead of PEM_read_DHparams()