Cache not cleared when includePaths updated

[lkysow]

Bug

When you add a file to be mocked to the includePaths config the cache isn't updated and you can't mock that class until you manually delete the cache.

Reproduction

• set up your includePaths to not include file A.php
• run a test using AspectMock that utilizes A.php so it's pulled into the cache
• now add A.php to your includePaths config
• modify your test so you mock something inside A.php
• re-run your test. A.php won't be mocked because the cache doesn't get refreshed

Resolution

A copy of includePaths should be included in the cache. When checking if a file should be read from cache or re-processed, we should also check if that file has been added to includePaths since the cache was last written