request: top-level file upstream-version

[Thien-Thi Nguyen]

Presently, README.ICECAT says

|To build from the IceCat CVS tree, you must first get the source
|tarball of mozilla here:
|ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/2.0.0.6/[...]

I'm writing to request a file be created in the top-level directory w/
name "upstream-version" (or similar), with contents "2.0.0.12".

This way, we would have one place to update for synching w/ upstream,
scripts can be written to reliably DTRT, and documentation for all this
can subsequently be made available.

What do others think?

thi