Update to NSS 3.24.0
    
    - Resolves: Bug 1336849 - nss-3.24 is available
    - Update patches on account of the rebase
    - Remove unused patches un account of the rebase
    - Patch pem module to compile with wrning for unitilaized variables treated as errors
    - Patch to skip some of the gtests as they use private calls and need to statically link with libnssutil.a
    - TODO: bring this up with the external_tests framework developers upstream and file a bug