test_time.rb: test_iso8601

* test/test_time.rb (TestTimeExtension#test_iso8601): run all
  xmlschema tests with iso8601 method, and fix the test name.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48209 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
win32/setup.mak: get target architecture from the compiler

* win32/Makefile.sub, win32/setup.mak (MACHINE): get target
  architecture from the compiler, instead of environment variable
  at build time, which is irrelevant to runtime environment, and
  not set when running in cygwin sshd.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48210 b2dd03c8-39d4-4d8f-98ff-823fe69b080e