mruby/mruby — pull request #1716 by cremno (2014-02-17 11:46:04+00:00)
Title: more mrb_flo_to_str fixes

- remove float check (take mrb_float instead of mrb_value)
- support -0.0
- fix range error if log10 is called when n == 0.0
- MSVC older than 2013: add signbit macro (for double)