Fix spelling of "NaCl" in various places: "NaCL" is the wrong capitalisation

native_client_sdk/src/tools/compiler-wrapper.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-"""NaCL gcc wrapper that presents glibc and newlib as a single
+"""NaCl gcc wrapper that presents glibc and newlib as a single
 toolchain.
 
 This wraps the newlib and glibc compilers and allows users
 to choose which one they really want by passed in --glibc
 or --newlib on the command line.
 
 We need this when using gyp to generator build files since
 gyp only support one target toolchain and one host toolchain
 (for now).
 """
@@ skipping 10 matching lines @@
     args.remove('--newlib')
   else:
     sys.exit("Expected --glibc or --newlib in arg list")
   compiler = os.path.abspath(sys.argv[0])
   compiler = compiler.replace("linux_x86", "linux_x86_%s" % variant)
   args = [compiler] + args
   os.execv(compiler, args)
 
 if __name__ == '__main__':
   main()