coroutine/ucontext/Context.c: define EXTENSIONS explicitly
instead of ruby/config.h, per samuel's request.
https://github.com/ruby/ruby/commit/dbfd4b780e3914a3f27e92c2248254452bf0fd6b#diff-7fd78c3cc8a19b7e0637502983ec26ff
Added by mame (Yusuke Endoh) over 4 years ago
coroutine/ucontext/Context.c: define EXTENSIONS explicitly
instead of ruby/config.h, per samuel's request.
https://github.com/ruby/ruby/commit/dbfd4b780e3914a3f27e92c2248254452bf0fd6b#diff-7fd78c3cc8a19b7e0637502983ec26ff