mv opcode.h -> include/mruby/opcode.h and remove duplication from mruby-eval gem
adjust signedness in mruby-eval gem
print_r() and print_lv() should only be compiled in for ENABLE_STDIO
Fix incorrect info in minirake's help message -- "-q" is the default, not "-v"
Merge pull request #2255 from mitchblank/master

two trivial fixes
allow quit/exit to work within mirb; fix #2253 close #2254

also allow spaces around quit/exit.
Merge branch 'master' of github.com:mruby/mruby
Support `LVAR` section removing.
Implement `LVAR` section removing option in mruby-strip.
move mrb_irep_remove_lv from etc.c to mruby-bin-strip gem
compile mruby-bin-strip gem by default
Suport block in Kernel#eval