When Wincache or APC are installed, the resource IDs are not the same.
This is because Wincache takes a few resource objects for itself. As a
result, these tests become false positives.
On Windows boxes, the microtime precision is not granular enough
to reliably register a difference if two calls to uniqid() are made
concurrently. This is a fix to the uniqid() test to avoid the false
positive when run on Windows machines. Also, added a test to exercise
the 'more_entropy' variant of uniqid().
These were caused by the tests assuming default values for some session
configuration settings, in particular session.save_path and session.name.
The tests now explicitly set these settings in the --INI-- section.
These hopefully test a reasonable set of basic, error and variations for
the twenty or so session functions. Note however that they do not
test all the session configuration settings, nor do they test anything
with register_globals enabled.
