Add skip method for test
Merge pull request #885 from mattn/test_skip

Add skip method for test
Remove needless file
Pluggable Time class
Remove needless files
Simplify mrb_range_beg_len(). Don't use OTHER macro.
Merge pull request #892 from mattn/remove_needless_files

Remove needless files
Merge pull request #888 from mattn/remove_onig

Remove needress file
Fix build
mrb_funcall_with_block: adj. ci & sp after error

see #894 / [ruby-talk:404969]
Clean code up.
Put mruby-time mgem into the repository.
Return nil if argument of NODE_RETURN and NODE_NEXT is not specified.
Increase TEST_INFINITE_RECURSION_MAX value from 100000 to 1000000 because modification of handling of `NODE_RETURN` reduces stack size.
Modify stack position of NODE_DEF and NODE_SDEF.
Add document for array_copy
Merge pull request #895 from monaka/pr-code-cleanup-20130226

Clean code up.
Ignore *.d, *.o, and /lib
Merge pull request #898 from masamitsu-murase/modify_return_value

Modify handling of NODE_RETURN and NODE_NEXT.
Merge pull request #893 from monaka/pr-simplify-mrb_range_beg_len

Simplify mrb_range_beg_len(). Don't use OTHER macro.