chk-jxcn

Add a argument and a new exception (to avoid infinite loop)

If shared object exist, start chibi-scheme-static show follow error: ``` ERROR: couldn't find builtin library: "/usr/local/lib/chibi/srfi/69/hash.so" ``` Maybe could skip function `file_exists_p` if sexp_find_static_library fail and path end with ".so"...