DSM-5.0 compatibility

Beginging with firmware version 4419 or laster, apache now run
under the "http" user instead of "nobody". Add version check to
installers and set the user appropriately for services that install or
access the webserver directory.
Version should be numeric only
Subliminal
- Set allUsers to false (#825)
- Use helpurl, remove pkgindexer commands (#636)
- Use no-use-wheel to prevent issues with bundling six
- Add DSM5.0 tag
Debian-Chroot
- Set allUsers to false (#825)
- Use helpurl, remove pkgindexer commands (#636)
NZBConfig
- Set allUsers to false (#825)
Transmission
- Remove Perl dependency
- Add DSM5.0 tag
HAProxy
- Set allUsers to false, #825
- Use helpurl, remove pkgindexer, #636
- Add DSM5.0 tag
Update help file for Debian Chroot, #825
Update Debian-Chroot to Wheezy
- Add DSM5.0 tag
Update README.rst

Fixed spelling error [spkrc vs spksrc]
Merge pull request #831 from JoelAzaria/patch-1

Update README.rst
Replaced digests for evansport, #840
Add Mercurial to Python spk
Add scrypt to python spk
Add Firefox Sync Server spk
Add mercurial and scrypt modules to Python spk
Merge branch 'develop-dsm50' of https://github.com/saschpe/spksrc into dsm50
tt-rss: Add DSM5.0 compatibility
Selfoss: Add DSM5.0 compatibility
Owncloud: Add DSM5.0 compatibility