Saves comitters' daily life by avoid #include-ing everything from
internal.h to make each file do so instead. This would significantly
speed up incremental builds.
We take the following inclusion order in this changeset:
1. "ruby/config.h", where _GNU_SOURCE is defined (must be the very
first thing among everything).
2. RUBY_EXTCONF_H if any.
3. Standard C headers, sorted alphabetically.
4. Other system headers, maybe guarded by #ifdef
5. Everything else, sorted alphabetically.
Exceptions are those win32-related headers, which tend not be self-
containing (headers have inclusion order dependencies).
(big2str_gmp): New function.
(rb_big2str1): Use big2str_gmp for big bignums.
* internal.h (rb_big2str_gmp): Declared.
* ext/-test-/bignum/big2str.c (big2str_gmp): New method.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42762 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
big2str_base_powerof2.
(rb_big2str_poweroftwo): New function for test.
(big2str_generic): Extracted from rb_big2str1.
(rb_big2str_generic): New function for test.
* internal.h (rb_big2str_poweroftwo): Declared.
(rb_big2str_generic): Ditto.
* ext/-test-/bignum/big2str.c: New file.
* test/-ext-/bignum/test_big2str.rb: New file.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42758 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
