Move CSyncThread in the main thread, and just do the neon jobs in a thread

It is important because then we can do assynchronious job that needs
QNAM in the main thread
use QNAM for the PUT

Not yet supported:
 - chunking
 - if the file changes while uploading
 - aborting
 - owncloudcmd  (because of the dependency to the account and the credidentials)
Start all the jobs in parallel
Added chunking for the new uploading.
Make abort work even when there are parallel uploads
Only starts 6 jobs in parallel
Merge branch 'master' into parallel_upload

Conflicts:
	src/mirall/owncloudpropagator.cpp
	src/mirall/owncloudpropagator.h
OS X: Read system-wide plist in /Library

Needed for http://doc.owncloud.org/desktop/1.5/autoupdate.html#preventing-auto-updates
Fix chunking

- Do not start them in parallel, start them in sequence instead, as they are quite
  and there are already other jobs running in parallel normaly
- Do not load the fill into memory
- Support resuming
OS X: Document how to disable the auto updater
Update documentation for 1.5.1
Theme: Update general disclaimer.
Removed not expected whitespace.
Disable explorer.exe integration on WinXP
final version
v1.5.1 ChangeLog
Parallel download
Remove unused function
Make owncloudcmd work with the parallel upload/download

Also make it work when there syncing a remote subfolder
fixing typo

GNU Public License->  GNU General Public License