Plug some memory leaks in movie thumb generator

fixes #1876
Add function to return memory used by spidermonkey
Show Fragmentation and Inactive Memory in sysinfo (if available)
ps3: Even more detail logging during OOM
Make it possible to use activate (X on ps3) button to play/pause video

Fixes #1879
Fix libntfs so it doesn't crash on unknown volumes

Fixes #1873
Fix typos in libntfs

Fixes #1873
If we fail to get upgrade manifests, just say that we "Up To Date"

Fixes #1877
charset conversion: Avoid accidental converts into NUL byte

Fixes #1492
New version of libntfs

Fixes #1863 (i hope)