An ANSI C compliant hashtable implementation.

REFACTORING PLAN:

• Rewrite manuals and add more
• Use namespace for values instead of a settings macro [X]
• Cap to 80 character lines [X]
• Fix up backslashes [X]
• Replace occurrences of 'chash' with just 'hashtable' [X]
• Make 'stackful' behavior its own macro [X]
• Write more tests
• Write better error messages [X]
• Lower indentation [X]