Quoted values in squid.conf

Quoted values in squid.conf

This patch :
  - adds support for quoted values in the entire squid.conf
  - warn about or prohibit values that can no longer be interpreted as
    either quoted strings or simple tokens
  - support parameters("/path/to/file.name") syntax to load external
    configuration files
  - Checks if macros allowed in "double quoted" values.
  - replaces the strtok() calls with calls to the new ConfigParser::NextToken()
  - modify strtokFile to use new ConfigParser::NextToken()
  - Add the new configuration_includes_quoted_values configuration option, to
    control the squid parser behaviour. If set to on Squid will recognize each
    "quoted string" after a configuration directive as a single parameter

This is a Measurement Factory project