libcli-1.10.7+git.20211009-bp156.2.4

- Update to version 1.10.7+git.20211009:
  * Fix memory leak in help line wrapper code
  * Allow compile time choice of 'select()' or 'poll()' when monitoring the libcli
    command file descriptor in cli_loop().
  * If the 'select()' call is chosen above, do a range validation to ensure the file
    descriptor is less than FD_SETSIZE
  * Fix incorrect help message if there is a validation problem for the value of
    an optional argument.
  * Fix confusing help message shown if there is a parsing problem for a subcommand
  * Fix a number of possible issues identified by static code analysis. As a result,
    the 'full' name of all commands is generated in cli_register_command(),
    instead of on the fly as was done before
  * Fix formatting of 'long' commands. If a command name is longer than 22 characters
    the help message will start indented on a new line, instead of being appended
    immediately behind the command name with no separation.
  * Some minor changes to clitest.c to show correct behavior due to above changes.
  * Fix segfault issue during tab/help processing
  * Minor cosmetic change to how help messages are generated, minor edits
    to some comments, minor cosmetic change to clitest demo code
  * Tweak to buildmode to only show optargs 'after' the point at
    which buildmode was entered.
  * Add new 'cli_dump_optargs_and_args() function for development/debug
    Designed to be called from a callback to show output of optarg and
    argument processing.
  * Updated CLI_CMD_OPTIONAL_FLAG parsing to use an validator function
    (if provided) to determine if the word being looked is a match for
    the optional flag. If no validator function is provided then the
    word much match the name of the optional flag exactly.
  * Enhance how cli_parse_line handles quotes when parsine the command
    line. This includs mixed single/double quotes, embedded quoted
    substrings, and handling 'escaped' quotes using the '' character.
  * Ensure that buildmode preserves 'empty' strings
    (ex: "", or '') when regenerating the cmdline after the user 'executes'
    the command.
- Rebase libcli-Makefile-lib64.diff