languages\BASIC reorg

[Clinton A. Pierce]

I re-organized the languages\BASIC tree into "compiled" and "interpreted" 
sub-trees.  The interpreted tree contains the original pasm-only 
implementation of GW-BASIC as an interpreted language.  The compiled tree 
contains a Quick-BASIC like compiler and a few sample BASIC programs 
(connect-4, eliza, wumpus, hanoi, etc..).

Parrot's GC and speed are *much* improved since I played with it a few 
months ago.  Hanoi for large numbers of disks no longer leaks, and runs 
noticably faster.  Nice job.