Log Message:
Changes 1.1.19:

o Disabled code for shutting down idle sockd processes, appears to need
  more testing.

o Upgrade to Automake 1.9.6.

o Use __libc_enable_secure if it exists and issetugid() doesn't.
  Should allow the SOCKS_CONF environment variable to be used on Linux.

o Check if large files need special support; logfiles can grow large.

o Drop trying to optimize away unnecessary PAM calls, creates
  obscure problems on some PAM-Linux implementations.

o Fixed bug introduced as part of additions to better preserve TCP
  semantics across connections.

o New module available: session.  This gives control over how
  many sessions different clients can create.

o In order to share some code, there were some api changes
  made to the bandwidth module, requiring users to upgrade.
  Users of the bandwidth module can contact sales for a free upgrade.

o Fix bug preventing immediate-error on wrong password to take effect
  for servers configured to use PAM.

o Update usage of 'head'.

o Support server-chaining.  Currently only the tcp connect command
  is supported.  It might be possible to add support for udp and
  tcp bind if requested.

o Fix PAM-related bug introduced in version 1.1.16.