porting code to sort out which NILs are false and which are
empty lists
switching to scheme-style special forms. however you feel about
scheme names vs. CL names, using both is silly.
mostly switching to scheme predicate names, with compatibility
aliases for now. adding set-constant! to make this efficient.
adding null?, eqv?, assq, assv, assoc, memq, memv, member
adding 2-argument form of if
allowing else as final cond condition
looking for init file in same directory as executable, so flisp
can be started from anywhere
renaming T to FL_T, since exporting a 1-character symbol is
not very nice
adding opaque type boilerplate example file
adding correctness checking for the pattern-lambda benchmark
bugfix in int2str