This patch makes several scripts and PHP development tools files
executable and adds more proper shebangs to the PHP scripts.
The `#!/usr/bin/env php` shebang provides running the script via
`./script.php` and uses env to find PHP script location on the system.
At the same time it still provides running the script with a user
defined PHP location using `php script.php`.
The existence of the following functions is now guaranteed:
* curl_escape()
* curl_unescape()
* curl_multi_setopt()
libcurl 7.15.5 has been released 11.5 years ago and is available
even in RHEL 5.
