[tbot] Release 0.6.5

[Harald Seiler]

Hello all,

today I release version 0.6.5!  4 days before Christmas, best idea ever,
I know ...

Anyway, here are the changes:

=== Added ===
- `Machine.lh` [1]: You can access the lab-host from every machine now.  The idea
  behind this is to allow access to lab-specific configuration in a much
  easier way.
- `mach.env()` can now be used to set environment variables as well:

	m.env("name", "value")

- `-p` for setting testcase parameters.  Provided values are parsed
  using `eval`, so be careful ... Example:

	$ tbot -p int_param=42 -p boolean=True -p string=\'str\'

=== Changed ===
- You can now use `--log=` to suppress the creation of a log file.

Question:
	Should we move to not creating a logfile by default, only
	if explicitly specified?

=== Fixed ===
- `selftest_path_stat` assuming the existence of `/dev/sda`, which makes
  it fail on systems without this block device.  (Apparently there are NO
  block devices that exist on every linux machine ...)
- tbot will now only color its output if appropriate.  It honors CLICOLORS[2].


[1]: https://rahix.de/tbot/module-machine.html#tbot.machine.Machine.lh
[2]: https://bixense.com/clicolors/
-- 
Harald

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-62  Fax: +49-8142-66989-80   Email: hws at denx.de