time.c (rb_big_abs_find_minbit): use ffs().
configure.in: check ffs().
missing/ffs.c: new file.
include/ruby/missing.h (ffs): declared.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
time.c (rb_big_abs_find_minbit): use ffs().
configure.in: check ffs().
missing/ffs.c: new file.
include/ruby/missing.h (ffs): declared.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e