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
rewrote mrb_any_to_s

use %p instead of %lx to prevent truncation and for consistency
Merge branch 'master' into iij

Conflicts:
	src/string.c
Merge pull request #823 from cremno/mrb_any_to_s-rewrite

mrb_any_to_s rewrite
Add semi-colon after the statement.
Merge pull request #824 from monaka/pr-add-semicolon

Add semi-colon after the statement.
changing Make_Data_Struct API; you need to modify your code that uses Make_Data_Struct; close #821