Added GLOB_NOSORT to glob flags

[kynx]

The recently released Mac highSierra OS has changed the order globbed files are returned when using GLOB_BRACE. Previously (and on any *nix box I've tried) you'd get something like:

config.global.php
foo.global.php
config.local.php

On highSierra you get:

config.global.php
config.local.php
foo.global.php

According to the libc man page glob sorts the file names alphabetically. But clearly this doesn't happen in most implementations when using brace patterns.

This PR adds a GLOB_NOSORT flag to ensure files are returned in brace order under highSierra. Note files within each brace match will now be returned in filesystem order: if someone were relying on entries in b.global.php overriding a.global.php this may not happen.

[weierophinney]

Closed in favor of #14.