fix typos
Doesn't clear black of all marked objects in major collections.
Since the minor collector doesn't need to mark these objects, the worst-case pause time is reduced.
Initialize edges of RRange.
Modify `Range#initialize` to accept optional `exclusive` argument.
change 2012 to 2013
Merge pull request #728 from takkaw/khash_typo

fix typos
Merge pull request #729 from authorNari/unclear-black-in-major-collector

Doesn't clear black of all marked objects in the major collector.
Merge pull request #730 from masamitsu-murase/modify_range_initialize

Modify `Range#initialize`
Remove multiple definition of RuntimeError.
Use MRB_DUMP_OK instead of 0.
include/mruby/cdump.h: Add new error codes.
src/cdump.h: Use error codes defined in mruby/cdump.h.
silence clang warning
use the new specifier b instead of o
Merge pull request #736 from selman/cmake_warning_fix

silence clang warning
Merge pull request #734 from monaka/pr-error-check-inprovement-in-cdump-and-dump

Error check inprovements in cdump and dump
Merge pull request #732 from masamitsu-murase/remove_multiple_definition_of_RuntimeError

Remove multiple definition of RuntimeError.
wrong condiiton in too many symbols check; #close #731
Merge branch 'master' of github.com:mruby/mruby
supress cast warning on C++.
Fix disappearance of command_call in case of statement without parentheses.