Read mod.conf

[S-S-X]

Read name and dependencies from mod.conf if file is present.
Set modname config value default and automatically set modpaths for hard dependencies (probably to fixtures dir).

Currently there's 2 ways to set modname:

• mineunit.conf configuration file
• Writing directly to mineunit._config.modname

Modname is important for very basic stuff like node registration and such. Even with forced registrations testing will be more accurate if modname is correctly set.

Priority for actual modname should be:

1. Direct writing to mineunit._config.modname.
2. mineunit.conf configuration file.
3. mod.conf configuration file.

[S-S-X]

Reading name from mod.conf done.

Reading dependencies require bit more work because of possible custom multi line format.
It would however be very helpful if mod paths could be set automatically for hard dependencies so that calls to minetest.get_modpath(...) would actually return expected values.