Add a configure script and rely on local definitions of derived constants
-rw-r--r-- 54 .darcs-boring
drwxr-xr-x - GHC
-rw-r--r-- 2868 LICENSE
-rw-r--r-- 87 Setup.hs
drwxr-xr-x - cbits
-rw-r--r-- 2880 configure.ac
-rw-r--r-- 120 integer.buildinfo.in
-rw-r--r-- 958 integer.cabal