Files to duplicate tyc2_loadindex.py on limited systems

"Limited" => without sqlite3.{so|dll} and/or Python sqlite3 module.

Makefile.amalgamation
- to build tyc2_test from tyc2_test.c from SQLite3 amalgamation
  files (sqlite3.[ch])

sqlite3ghost.py
tyc2_loadindex_hogan.py
- sqlite3ghost.py is a stand-in for sqlite3 module for the purpose
  of writing tyc2.sqlite3 SQL statements to STDOUT;
- tyc2_loadindex_hogan.py is out of date with tyc2_loadindex.py