Small refactor optim
blitz_exec_context gets only called if node->type == BLITZ_NODE_TYPE_CONTEXT (from blitz_exec_nodes), so checking for it is kind of useless.
Re-worked the code to ditch the check and make the function more readable

    if (node->type == BLITZ_NODE_TYPE_CONTEXT) {
        BLITZ_LOOP_MOVE_FORWARD(tpl);
        blitz_exec_context(tpl, node, parent_params, id, result, result_len, result_alloc_len TSRMLS_CC);
        BLITZ_LOOP_MOVE_BACK(tpl);
    }
Added the magic scope feature: _top and _parent
Only if you enable it by setting blitz.enable_magic_scope = 1 in the ini. Check tests/scope4.phpt as example
Added some more features to show the full power of it :)
Removed ini setting blitz.enable_magic_scope, it's always enabled
Merge pull request #1 from poison/feature-magicscope

feature magicscope by Nikolas