Merge Softload facility for RiscPC, Iyonix, & Titanium machines.
After the previous change, the facility to softload a ROM at boot is effectively the same on all these machines. This change generates it from a single Generic set of source files, rather than the sets for each of 5 build processes previously.
Some insignificant inconsistencies have been eliminated, and 14 files merged into 7.
The Prompt BASIC program is now BasicTxt, and Crunched for release.
A subsequent change will allow one of multiple ROMs to be selected.
Testing: All 5 builds have been generated by simulating the AutoBuilder, and the resulting zips compared before and after these changes with no significant differences found. Note however that the Tungsten & IOMDHAL builds do not agree with the public downloadable versions.