* Bug 27823 - Re-enable functionality of --uploads option of importDump.php; introduce --namespaces filter option for importDump.php
Patch from Dmitriy Sintsov of which he writes:
I needed to selectively import files from URL's defined in
previousely made XML dump. This worked fine in 1.15, but to my
surprise wasn't working with 1.17, producing an error. I've
partially fixed upload code (including supplying of original User
instance for local upload) and introduced new option to
selectively import only the listed namespaces in importDump.php
command line.