[ruby-cvs:78496] dbfd4b780e (master): coroutine/ucontext/Context.c: Include "ruby/config.h" for Solaris

Yusuke Endoh	2019-12-04 20:59:39 +0900 (Wed, 04 Dec 2019)

  New Revision: dbfd4b780e

  https://github.com/ruby/ruby/commit/dbfd4b780e

  Log:
    coroutine/ucontext/Context.c: Include "ruby/config.h" for Solaris
    
    getcontext, makecontext, and swapcontext seem to be available only when
    `__EXTENSION__` is defined on Solaris.

  Modified files:
    coroutine/ucontext/Context.c