python: clean-up detection

Try everything until Python is found.

PR-URL: #1582
Reviewed-By: Rod Vagg <rod@vagg.org>

Author: joaocgreis

bin/node-gyp.js

@@ -79,12 +79,8 @@ function run () {
   prog.commands[command.name](command.args, function (err) {
     if (err) {
       log.error(command.name + ' error')
-      if (err.noPython) {
-        log.error(err.message)
-      } else {
-        log.error('stack', err.stack)
-        errorMessage()
-      }
+      log.error('stack', err.stack)
+      errorMessage()
       log.error('not ok')
       return process.exit(1)
     }