make bp type uint32_t everywhere
Remove ZEND_ACC_INTERACTIVE and CG(interactive)

As far as I can discern these are leftovers of the interactive
shell implementation that was used before PHP 5.4. Now the readline
ext makes use of normal eval calls for this.

So, dropping these until there is evidence to the contrary, as they
currently wouldn't work anyway.
generalize the zend_long stuff
fix func argument type
updated UPGRADING.INTERNALS
fix strtol call