Cleaned up mandelbrot example to dist
Add mandel.js to dist README.rst
Merge branch 'add-ecmascript-examples-to-dist'

Just mandel.js for now, it's enough to allow user to run a command line
example.
Ditz issue update
Ditz issue update
Ditz issue update
Makefile trivia: -Wunused-result, test262 cleanall

Add -Wunused-result: should not be needed since it should be the default.
Code policy improvements

- Better linenumber for policy complaint
- Add empty first line check to code policy checker
Test case coverage: try, var
Whitespace and other code policy fixes
Code policy fix
Remove obsolete testcase

Covered by test-bi-duktape-json-custom.js.
Trivial testcase cleanups
Test case coverage: array, buffer, etc
Test case coverage: Date
Ecmascript test case coverage improvements
Test case coverage: RegExp
Release note: regexp limit RangeError
Test case coverage: bitops
Add a few basic call expression tests