getopt.h doesn't exist on AIX and getopt is in unistd.h

On solaris, the term.h pulls in termio.h and termios.h if it detects
that they are not loaded. Because stmclient.h pulls in termios.h that
breaks type definitions in term.h that needs termio.h.

Detect diffrent variants of curses and use them.

If subtract is called on itself, prefix and this is the same and the
iterator is invalid after modifying the underlaying object.

Instead just clear everyting.

Closes #354. Closes #355.

(based on patch by Nickolai Zeldovich)

Closes #333

Teach the 'lost contact' warning string about time units larger than
seconds. After 60 esconds it will switch over to using a time display
that looks like 1:23, or 1:02:34.

Fixes #321.

Signed-off-by: Kevin Ballard <kevin@sb.org>

Display configuration results at end of configure run,
including the version, c++ compiler, and various
compiler flag variables.

Signed-off-by: Luke Mewburn <luke@mewburn.net>

Extend mosh and mosh-server to support parsing a high port from
the desired_port argument.  The first (low) port must not be
greater than the second (high) port.
If only one value is provided, behaviour is as before; bind
to one port.  Also tweak the formatting in mosh-server(1) synopsis
to be consistent.

This resolves mosh issue # 296.

Signed-off-by: Luke Mewburn <luke@mewburn.net>

This reverts commit 0909ea55.

On FreeBSD, the socket option length must be declared as an int.

While I'm here, translate dscp (0x92) to the appropriate constants.

(tested on FreeBSD only so far)

... plus the local changes from:

  3b2604b8 Handle early gcc compilers that are missing __builtin_bswap64 or __builtin_ctz
  e8236c5f Use AlignedBuffer stedda posix_memalign(). Should work on PPC OS X 10.5.
  9827d123 Switch to OpenSSL AES