remove unused functions 'mrb_strerrno' and 'mrb_bug_errno'.

Reduce stdio dependency

Fix indentation in mirb.c

mruby-sprintf should precede mruby-print

Make topenv() static inlined to avoid compiling error when using clang and -O0 mode

Changed the RData type field to 'const'

Adjusted indent, space and tab

Include stddef.h. It is required by size_t. In case you include stdio.h, stddef.h is included indirectly.

Within the mruby source code the 'type' field is either initialized, or used in const manner.
IMHO changing the type after it has been created might cause hard to track errors.

NaN boxing: fix compilation

Remove unused mrb_sprintf

Use MRB_SET_VALUE instead of directly accessing members of mrb_value
which are different if NaN boxing is enabled.

Remove needless prototype

mruby-print gem

For particular environments which has 25 < n < 32 bit int. There is no cost even if you use 16/32bit int targets.

Add brances to macro parameter. It may be refactored as GET_UNPACK_{b,c} are used only by GETARG_{b,c}.

Use mrb_bool instead of int. This is for portability; based on e767ebf but iv_foreach_func must return int

Modified license information for mruby-random

Merge branch 'pr-add-mrb_ptr_as_string' of https://github.com/monaka/mruby into monaka-pr-add-mrb_ptr_as_string

Remove _obj_classname()