zos: don't use universal-new-lines mode

This reverts commit 40edac20c8c9644067636e5722c389954890bccf.

gyp/pylib/gyp/input.py

@@ -233,7 +233,12 @@ def LoadOneBuildFile(build_file_path, data, aux_data, includes,
  # Open the build file for read ('r') with universal-newlines mode ('U')
  # to make sure platform specific newlines ('\r\n' or '\r') are converted to '\n'
  # which otherwise will fail eval()
- build_file_contents = open(build_file_path, 'rU').read()
+ if sys.platform == 'zos':
+ # On z/OS, universal-newlines mode treats the file as an ascii file. But since
+ # node-gyp produces ebcdic files, do not use that mode.
+ build_file_contents = open(build_file_path, 'r').read()
+ else:
+ build_file_contents = open(build_file_path, 'rU').read()
  else:
  raise GypError("%s not found (cwd: %s)" % (build_file_path, os.getcwd()))