#46 Add support for other common lisp implementations

[Mari Hahn]

Please port xindy to other common lisp implementations

For quite some time clisp is hard to compile with current stable
releases of GCC, especially on non-x86 platforms. For me it seems that
clisp is no longer actively maintained, as there has not been a new
release within 5 years to fix bugs or port clisp to newer toolchains.
While clisp was a good option a few years ago, because it was portable
and easier to set up than other common lisp implementations, time has
changed: Precompiled binary versions of Steel Bank Common Lisp or
Embeddable Common Lisp can easily be found on multiple platforms. Apart
from being more portable than clisp other lisp implementations are
quite a bit faster than clisp:
http://www.cliki.net/Performance%20Benchmarks

The maxima project have some experience with supporting multiple common
lisp implementations: http://maxima.sourceforge.net/lisp.html

I personally believe that sbcl (fast) and ecl (portable) are two very
good options and it would really great if xindy was ported to (one of)
these two common lisp implementations.

Best wishes,
Mari Hahn