Setting cache options problems

[storeman]

In Zend_Cache the following code is used multiple times:

while (list($name, $value) = each($options)) {
   //....
}

This is a problem when the options are looped through earlier, the internal pointer is not 0 anymore. I had problems with this, I could not set the cache dir and took me some time to figure out what was happening.

As I see it, it could be solved in two ways:

1. Calling reset before looping through the options
2. Use foreach instead of while/each (I prefer this one)

This constuction is used multiple times through Zend_Cache. I replaced all using the second method. All tests passed succesfully.

Do I miss anything before I place a pull request?