Nuke old upload scripts.
Add support for installing on unixes

The Makefile has been updated with `make install` and `make uninstall`
rules (via Josh Simmons.)

Move struct.lua to our script dir for simplicity.

Cleaned up TUNDRA_HOME/path scanning.

TundraExePath set from native side instead of passed via args. It
doesn't make sense for anything but IDE generation. The previous code
also passed in the path to t2-lua, which was wrong.

Make t2-lua selftest usable on its own.

Move tundra script directory scanning away from Common and into t2-lua.

Fix strict require happened too late.