Remove special self/parent handling in get_class_name_map_ptr()

[nikic]

zend_accel_get_class_name_map_ptr() for "self" and "parent" will
currently try to determine which class these refer to, and then
initialize the CE_CACHE on those strings.

However, this shouldn't be necessary: We already initialize
CE_CACHE on all class declaration names, so it should be covered
through that already.

[nikic]

@dstogov Did I miss something here, or is this dead code?

[dstogov]

This is not a dead code.

I inserted asserts into the current code and caught a number of "failed" tests. e.g. in Zend/tests/bug43332_1.phpt self is not going to be cached.

<?php
namespace foobar;

class foo {
  public function bar(self $a) { }
}

Probably, this may be fixed by compile-time substitution of self to the real class name.

[nikic]

I'm not sure I get what you mean. The "self" string itself is also not cached before this patch. It adds a cache slot to "foobar\bar", which does not help the type resolution, and will be allocated for the class declaration already.

[dstogov]

you are right.