9/23 single player finished; sc_pr works through 10th

Version set up with line outputs to track flow through methods/cases,
and rigged roll_results to make sure high-value combinations get tested.
Saving version as bowling_single_debug
9/23 single player *actually* finished; sc_pr works through 10th

Version w/ line outputs to track flow through methods/cases; rigged
roll_results to make sure high-val combinations get tested. As saved,
set to run 100x w/ checksum (prog vs comp scoring methods) to test for
errors. Saving version as bowling_single_debug.
Separate file for single-player version; moving on to multiplayer/skill
beg multpl; input/flow ok, need change array refs
mult/skill (arith) complete; messy
Multpl/skill complete, test output removed
Finished/formatted multpl w/ skill; no stats