Update italian translation
mkvmerge: add option to adjust bitstream timing information to track's default duration
Add test case for 44e822e
docs: document --fix-bitstream-timing-information
Update AUTHORS and ChangeLog
Update italian translation
Update italian translation [bovirus]
Updated italian translation
mmg: add control for new option --fix-bitstream-timing-information
Update ChangeLog
Merge branch 'master' of github.com:mbunkus/mkvtoolnix
Translations: update list of translatables (programs & man pages); update German
Cosmetics: alignment
Italian language updated
avilib: add function for retrieving the total number of audio chunks
AVI reader: fix skipping of 0-sized audio chunks

Fixes #843.
mkvmerge: set I/O priority class to 'idle' for lower/lowest --priorities on Linux

Implements #863.
tests: Intentional update due to b5c5961
priority: set process priority to "background" for "--priority lowest" on Windows

This also lets Windows' scheduler select the "very low" I/O priority
class automatically. Implements #863.
priority: only select "idle" I/O class for "lowest" priority on Linux

This way behaviour matches on Windows and Linux.