Ignore-this: fd4deeaf5a222d109ce14c3265190c5f

darcs-hash:2ba4ca2c830ae96107ed4d91a03ce6c283d1552b

chop the various impl dependent lexenv code into their own files. it's still sbcl only and the rest is commented out, waiting for the opensoruce fairies...

darcs-hash:3824dec2bce3d94d9e1361448fa6b607d9d12959

darcs-hash:80fc9b0b24c206c1db037c2f11e3d3da7908f9e9

darcs-hash:8bf2840b5221175e395175db50bb945d30b59f5d

darcs-hash:2a906bdbc1c3dccc7ab979490f1cf0f3bf2e32d2

darcs-hash:71c85e07d4f107de866aa72f22949ed100caaff0

darcs-hash:5bab948481d15fb1e2119a941b88ac722e6e6e04

darcs-hash:d7a48ff0d988bae3a22d0bcf39c84c8b118b6725

darcs-hash:8b05c60a731b005b448c957fcae5b8c2f9860c69

darcs-hash:2d7f0bf1779cfd20a84dd462c5be54d0bb2c79ed

darcs-hash:3eef23267b5037f01a2488cc26bd15249ce0b821