Lightweight bytecode interpreter

JeffBezanson 626801fd1f adding => form of cond clauses ... adding path.exists? R6RS psyntax simple example now works		2009-08-14 03:17:21 +00:00
femtolisp	adding => form of cond clauses	2009-08-14 03:17:21 +00:00
llt	adding => form of cond clauses	2009-08-14 03:17:21 +00:00