win32.c: wchar conversion

* win32/win32.c (rb_w32_wstr_to_mbstr, rb_w32_mbstr_to_wstr): make
  WCHAR/mb conversion functions public.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45521 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-04-06

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45522 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
dln.c: non-ascii path on Windows

* dln.c (dln_load): use wchar version to load a library in
  non-ascii path on Windows.  based on the patch by Bugra Barin
  <bugrabarin AT hotmail.com> in [ruby-core:61845].  [Bug #9699]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45523 b2dd03c8-39d4-4d8f-98ff-823fe69b080e