Change the way that the DISABLE_GEMS flag is set for vs2012.
Merge pull request #809 from mattn/vs2012_disablegems

Change the way that the DISABLE_GEMS flag is set for vs2012.
Remove ";" suffix from function-type macros.
Merge pull request #810 from masamitsu-murase/remove_semicolon_from_function_type_macro

Remove ";" suffix from function-type macros.
Add androideabi toolchain rake task (Build mruby with Android NDK)
Generate mrbtest.a file for sparete from driver.o
Fixed failure
Modify handling of integer literal.

Do not assume that significand of `double` is larger than `mrb_int`.
Prevent overflow of `Fixnum#to_s`.
Fix potential bug about Hash.
Restore arena in `String#split`.
removed declarations of undefined functions
Merge pull request #820 from cremno/unused-stuff

Remove declarations of undefined functions
Merge pull request #817 from masamitsu-murase/restore_arena_in_string_split

Restore arena in `String#split`.
Merge pull request #816 from masamitsu-murase/modify_potential_error_of_hash

Fix potential bug about Hash.
Merge pull request #815 from masamitsu-murase/modify_handling_of_large_fixnum

Modify handling of large fixnum
Merge pull request #812 from shtirlic/androideabi

Add androideabi toolchain rake task (Build mruby with Android NDK)
Merge pull request #813 from masuidrive/generate_mrbtest_a

Generate mrbtest.a file for sparete from driver.o