entries with just the file path, removing the revision number, date,
author and state.  The actual information is now computed during
compilation and stored in the fasl itself.  (See ticket:48.)

may get confused with source locations if the reader macros are
installed.

boot-2010-02-1 as the bootstrap file.  You should probably also use
the new -P option for build.sh to generate and update the po files
while building.

type.  Based on the version in SBCL.

should use subtypep instead, in case we are given user-defined types.

matches the length of the sequence type.

variable *merge-lists-header* which was destructively modified by
merge-lists*; and remove the variable *merge-sort-temp-vector*
allocating a fresh vector for each vector stable-sort.

in various calls to ERROR. Those easily handled by using new condition
types simple-file-error and simple-program-error are included.

The only functional change here is that the function CHARACTER no longer
accepts an integer argument so as to be ANSI compliant. This may
break some code.