fix implementation of FOR statement to be exactly C-style
ezhil/Interpreter.py - remove mixing TAB and space for SPACES
ezhil/ast.py - fix evaluation of FOR statement
ezhil/ezhil_parser.py - add support for FOREACH statement using FOR AST
ezhil_tests/* - add assertions to ford2.n
foreach.n - new test to figure out the feature
test - add foreach.n and foriter.n to the tests always