Modified build dependency to exclude 'LEGAL' from libmruby archive.
Add syntax error for incomplete global variables
Improve CRuby rake compatible
Fix exit
Merge pull request #1138 from h2so5/syntax-error-for-incomplete-global-variable

Add syntax error for incomplete global variables
Merge pull request #1139 from masuidrive/build

Improve recent CRuby rake compatibility
Merge pull request #1141 from mattn/fix_exit

Fix exit
use EXIT_SUCCESS and EXIT_FAILURE for exit status; close #1142
parse_args should return either EXIT_SUCCESS or EXIT_FAILURE
comment E_* macros to address concerns in #1143
Add some tests.
Add a comment. Kernel#require is defined in the mrbgem.
Improve checking for unterminated string in mirb
Define isascii for C99
stdint header seems required on osx for uint8_t
Merge pull request #1116 from kurodash/pr-exclude-legal-from-archive

Modified build dependency to exclude 'LEGAL' from libmruby archive.
Merge pull request #1145 from h2so5/fix-mirb

Improve checking for unterminated string in mirb
Merge pull request #1146 from kano4/pr-define-isascii-for-c99

Define isascii for C99
Merge pull request #1147 from schmurfy/dump_osx

stdint header seems required on osx for uint8_t
Add "test runner" support for cross builds.
 "test runner" means target simulator like QEmu, GDB sim, and so on. Also "test runner" might be debug agents for real targets.
If you do not setup test_runner, Rake will work same as before.