Support for MediaInfo v19

[zakk]

A big "merci", I never managed to drag n' drop any mediainfo.dll (32 or 64 bits) into AMC folders, and get it to work.

[antp]

As there is a version check inside AMC, usually only the version bundled with the program works.
But maybe I should remove that check, it was originally made to avoid using incompatible version, but in 99% of the cases the upgrade to a newer version works without any change.
I don't know why MediaInfo so often change their major version numbers then, by the way