initial checkin of config files for frotzos
checkpoint of getting frotz working
Squashed 'frotzos/frotz/' content from commit a08bc67

git-subtree-dir: frotzos/frotz
git-subtree-split: a08bc67bf1b466e7cdb1d6b861ef821b892cf40d
Merge commit 'b062d5da2f04d381cf3b83f6b8fd8211e4aef51a' as 'frotzos/frotz'
automated build of iso from game source zip, gets to working shell
renamed PROJECT to PLATFORM, frotzos to zmachine
optimize incremental make; fix some glitches in turnkey build process