mruby/mruby — pull request #1448 by cremno (2013-08-09 01:42:14+00:00)
Title: fix bison 3.0 warning

```
YACC src/parse.y -> build/host/src/y.tab.c
src/parse.y:936.1-12: warning: deprecated directive, use ‘%pure-parser’ [-Wdeprecated]
%pure_parser
^^^^^^^^^^^^
```

This change is compatible with older versions like 2.4.2.