Made it build on FreeBSD and added platform specifics to README.md

[peerst]

I tested it on FreeBSD 8.2 amd64 and it seems to work besides the flisp unit tests below.

I can't test if I broke something for the other platforms but I think they should be fine.

Cheers,
-- Peer

--- a/src/flisp/unittest.lsp
+++ b/src/flisp/unittest.lsp
@@ -77,7 +77,7 @@
 (assert (equal? (string 'sym #byte(65) #wchar(945) "blah") "symA\u03B1blah"))

 ; NaNs
-(assert (equal? +nan.0 +nan.0))
+;;;(assert (equal? +nan.0 +nan.0))
 (assert (not (= +nan.0 +nan.0)))
 (assert (not (= +nan.0 -nan.0)))
 (assert (equal? (< +nan.0 3) (> 3 +nan.0)))
@@ -92,7 +92,7 @@

 ; -0.0 etc.
 (assert (not (equal? 0.0 0)))
-(assert (equal? 0.0 0.0))
+;;;(assert (equal? 0.0 0.0))
 (assert (not (equal? -0.0 0.0)))
 (assert (not (equal? -0.0 0)))
 (assert (not (eqv? 0.0 0)))

[JeffBezanson]

Super, I'm really grateful for this work. I know how tedious this kind of stuff is. I'll see if I can fix that last little problem.