Fix make distcheck
Really fix make distcheck
Fix test for pkg -vv for directories that can be relative to -C
Move the tokenizer code into libpkg
Allow arguments in ucl keywords

if ucl keyword defines the boolean "arguments" then %@ will be parsed
and splitted:
%# == number of arguments
%@ == unsplitted string
%1 == first argument
%2 == second argument

In the action field it is possible to specify which of the splitted
arguments will be used the following way:

actions: [file(1)]
Implement automatic directory removal handling
Stop packaging mtrees
Do not extract anymore mtrees
Remove DISABLE_MTREE option which is now no-op
Fix ensuring the last char of a directory is a '/'
Remove unused variables
1.4.0-pre-alpha13