replace mruby-getopts with mruby-docopt#32

Open

toch wants to merge 7 commits intomasterfrom

Commits on Oct 26, 2015

make test error messages more specific
hone
committed

Commits on Oct 27, 2015

WIP for moving over to mruby-docopt
hone
committed

Commits on Nov 5, 2015

Commits on Dec 2, 2015

Commits on Feb 25, 2016

link statically libstdc++ to avoid conflict with target libstdc++
toch
committed