Adds m*/ along with test coverage for literal_runtime, d_dot, ud_dot, m_star_slash

[patricksurry]

Knock a few items off #91

I implemented your code for m/ and took a few tests for m/ from https://forth-standard.org/standard/double/MTimesDiv, and added one with negative n2. Not sure if you want more there. I guess if more double words are implemented we could make double an option for tali_optional_words?

Added a test to exercise the old style literals (jsr + payload).