Implement fboundp.
Merge pull request #87 from redline6561/dev

Implement fboundp.
Update CREDITS
Implement SUBSEQ for lists
Misc. fixes to SUBSEQ, tests
Relax compiler literal caching

Equal is too general. Diferrent literals are considered the same and
if you modify destructively one of them, then other were modified too.
Merge https://github.com/abeaumont/jscl

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Merge pull request #89 from Strigoides/subseq

SUBSEQ implementation for lists
[test] Add a test for mapcar
[test] Remove comments about EQUAL not being properly defined for lists
[test] Add tests for CONS, CONSP, ATOM, RPLACA and RPLACD
[test] Remove debug print from MAPC test
car and cdr variants: order definitions properly, remove duplicates and add missing ones