fix potentially major security hole: modification/creation of files in .phar directory enabled in many locations
which then allows easy creation of tar/zip-based phar archives with a simple renam

fix potentially major security hole: modification/creation of files in .phar directory enabled in many locations
which then allows easy creation of tar/zip-based phar archives with a simple rename even when phar.readonly=1. Plug the hole very tightly, allowing read access to
files, and also excluding them from opendir() output

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- MFH
- Make internal code forward-compatible. This included a binary cast in the default stub, hence test updates.

This commit was manufactured by cvs2svn to create branch 'PHP_5_3'.