Support custom TERM and COLORTERM env vars

[John Feuerstein]

The attached patch adds the configurable profile options "term" and "colorterm" to set the respective environment variables "TERM" and "COLORTERM".
This is different from setting a custom emulation, as it allows to stay on emulation "xterm" while setting the terminal variant "xterm-256color".

You can install package "ncurses-term" on Debian derivatives to get the required terminfo/termcap files. It results in vim automatically detecting 256 color support without forcing t_Co in vimrc.

Example configuration (~/.config/terminator/config):

[profiles]
  [[default]]
    term = xterm-256color

Hope this helps,
John

[Chris Jones (cmsj)]

Thanks for the patch, apologies for the delay. I've applied it to trunk and it'll be in the next release.