Changelog:
==========
* Convert repo to git
* Remove sig unsafe functions from signal handler (Ticket #22).
* Allow -e to explicitly specify the environment variable to use
(Ticket #5).
* Unset the variable specified with -e before calling subprogram
(Ticket #25).
* Change the logic for setting a controlling TTY. Fixes compatibility
issues with OpenSolaris and MSYS/Cygwin. Thanks Marcin Olszewski for
the fix.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>