[build2] Access to environment variables

[Boris Kolpackov]

Hi Max,

Moldmann Max (DC-MH/ENG52-NA) <Max.Moldmann at boschrexroth-us.com> writes:
 
> Unfortunately only for one directory.

We will add some more regex functions that will allow you to chop and
split strings like this anyway you like. Give us a couple of days.

Boris