Support for --long-acl-options

Support for --long-acl-options

The old single-letter ACL "flags" code was refactored to support long option
names (with option-specific value types) without significant
per-ACL-object performance/RAM overheads and without creating a global
registry for all possible options. This refactoring (unexpectedly)
resulted in removal of a lot of unreliable static initialization code.

Refactoring fixed ACL flags parsing code that was dangerously misinterpreting
-i and +i flags in several contexts. For example, each of the three cases
below was misinterpreted as if three domains were configured (e.g., "+i",
"-z", and "example.com") on each line instead of one domain ("example.com"):

        acl parsedAsThreeDomains dstdomain +i -i .example.com
        acl parsedAsThreeDomains dstdomain -i +i .example.com
        acl parsedAsThreeDomains dstdomain +i -z .example.com

TODO: Finish ACL::clone() removal. Then consider removing any unused
ACLData::clone() and associated ACL/ACLData copying methods.

This is a Measurement Factory project.