Add additional restrictions about airline HOT 7 CLOSED

• @Port - Indicates that an integer field is expected to receive a value that is a port. Include ability to restrict to non-priveleged ports and control whether 0 may be passed to indicate system determined port

from airline.

The numeric ranges and @AllowedValues are now done on the restrictions branch

from airline.

The @Port restriction is now added to the restrictions branch

from airline.

Latest additions:

• @RequireSome and @RequireOnlyOne from requiring some/exactly one from a group of options
• @MaxOccurrences, @MinOccurrences and @Once for setting max/min occurrences of an option/arguments

from airline.

Some more ideas for string specific restrictions:

• @Pattern - Enforce matching of a regular expression
• @NotEmpty - Require a non-empty string
• @NotBlank - Require a non-blank string
• @LengthRange - Restrict the length of the string

from airline.

Implemented the various string restrictions with some minor changes, also got @LexicalRange implemented

from airline.

Completed and merged to 2.x branch

from airline.