Requirements
------------
The libraries supplied with Acorn C/C++ (preferably Castle's 32-bit version).

Makatic.

Acorn's amu (alternative make utilities may work).

A stripped version of OSLib. Use StripOSLib from my website to create if
necessary.

Building
--------
Copy this version of !ArtToSpr over the master copy (ie the runnable one) and
run its !Boot (this is superfluous in the ordinary version but the
ArtToSpr$Dir variable is needed for building). Run one of the
pseudo-applications within:

!MakeDev:	Builds a version which logs diagnostics to stderr.
!MakeRel:	Release version (without diagnostic logging).
