Don't overwrite ciidx if it is already set.
Add documentation for Android toolchain
add mrbtest verbose mode ('-v' option)
"for i in (1..12/5); p i ; end" should not print "3"
Merge pull request #832 from bovi/compile-readme

Add documentation for Android toolchain
Merge pull request #833 from iij/pr-mrbtest-verbose

add mrbtest verbose mode ('-v' option)
Merge pull request #831 from carsonmcdonald/ciidxfix

Don't overwrite ciidx if it is already set.
Merge branch 'master' of github.com:mruby/mruby
should adjust stack size when irep->nregs is larger than allocate size; close #835
add mrb_str_to_cstr
Merge pull request #836 from iij/pr-mrb_str_to_cstr

string contains null byte check utility function (mrb_str_to_cstr)
Update doc/compile/README.md
Added String#sub/sub! and String#gsub/gsub!
Merge pull request #838 from brainopia/patch-1

Fix typos in compilation guide
Merge pull request #839 from masuidrive/string_sub_gsub

Added String#sub/sub! and String#gsub/gsub!