empty path, just ignore.
* dir.c: remove <sys/parm.h> inclusion.
* compar.c (cmp_eq,cmp_gt,cmp_ge,cmp_lt,cmp_le): check using
rb_cmpint().
* error.c (init_syserr): remove sys_nerr dependency.
* numeric.c (num_cmp): added to satisfy Comparable assumption.
* eval.c (rb_add_method): "initialize" should be public if it is a
singleton method.
* regex.c (re_match): avoid dereferencing if size == 0.
(ruby-bugs-ja:PR#360)
* time.c (time_cmp): should return nil if an operand is not a
number nor time. (ruby-bugs-ja:PR#359)
* file.c (rb_stat_cmp): should return nil if an operand is not
File::Stat.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3076 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
