Do not reject all of memnotify input if unknown data is found from it

Adding new memnotify values makes mce ignore even the values it is
expecting to see.

Make mce skip unknown values and only warn about possible out of
sequence values.

[mce] Do not reject all of memnotify input if unknown data is found from it. Fixes JB#24908
Merge pull request #228 from spiiroin/jb24908_memnotify_parser

Do not reject all of memnotify input if unknown data is found from it