Vanilla/configure script is also missing now. what is going on?

the old way worked for all these years why is someone drastically
altering the build/configure process??!

At least document in INSTALL how to build it now. I only found out
about tests/build script from  being in #netrek channel. If this was
replaced also by a new way to build why is it not documented in the
distribution? This really MUST be documented and put INSIDE the
Vanilla source tree PLEASE.