Story #64327: Unit test compatibility with HHVM
Update vfsStream to 1.4
New version of vfsStream was released which also runs better on hhvm. It would be nice if we can use it our unit tests suite.
[TASK] Update vfsStream to 1.4
Update vfsStream library version as it runs nicely on hhvm.
This library is used only in unit tests.
No functional changes are expected.
Reviewed-by: Mathias Schreiber <email@example.com>
Tested-by: Mathias Schreiber <firstname.lastname@example.org>
Reviewed-by: Georg Ringer <email@example.com>
Tested-by: Georg Ringer <firstname.lastname@example.org>