Tech-docs BSP-Parallel thread
- Documented how threadlike specs for BSPP thread are derived from norm data.
- Refactoring of BSPP_thread.awk to make the code easier to document (order of calculations, avoid repetition).
closes#6
- explain structure of THREAD_TABLE.scad and relation to thread module
- explain threads and how to derive proper specs for inclusion in threadlib
- explain use of autogenerate.awk
- explain tests (i.e., test_table.awk)
closes#5
