[Libreoffice] Windows Building with subst fails (already for a longer time)

[Bircher Florian]

Building on Windows is not easy as on Linux
Due to sometimes longe paths I used subst to create new drives directly
pointing to the libo source directory.
For the first Beta it did work.
After a break I had to get used to the new warper (g instead of bin/g).
And got a lot of errors. (dmake 127?)  it was because subst (or some
programs) have problems in some points with the rights (on win7 at least).
So using subst for building on win7 is not a option for libreoffice.

Greatings
Florian Bircher