Merge "Adding option to configure compression level" into main

      older SPL.

  --vabc_compression_param

      Compression algorithm to be used for VABC. Available options: gz, lz4, zstd, brotli, none

      Compression algorithm to be used for VABC. Available options: gz, lz4, zstd, brotli, none. 

      Compression level can be specified by appending ",$LEVEL" to option. 

      e.g. --vabc_compression_param=gz,9 specifies level 9 compression with gz algorithm

  --security_patch_level

      Override the security patch level in target files

      assert a.lower() in ["true", "false"]

      OPTIONS.enable_lz4diff = a.lower() != "false"

    elif o == "--vabc_compression_param":

      words = a.split(",")

      assert len(words) >= 1 and len(words) <= 2

      OPTIONS.vabc_compression_param = a.lower()

      if len(words) == 2:

        if not words[1].isdigit():

          raise ValueError("Cannot parse value %r for option $COMPRESSION_LEVEL - only "

                         "integers are allowed." % words[1])

    elif o == "--security_patch_level":

      OPTIONS.security_patch_level = a

    elif o in ("--max_threads"):