LangFile: Use flock()ing
LangFile: Use flock()ing

Doesn't guarantee that all issues related to multiple processes
accessing the same file at the same time, but prevents some of them.

erengy/vndb,christian-roggia/vndb,morkt/vndb,erengy/vndb,morkt/vndb,christian-roggia/vndb,morkt/vndb,christian-roggia/vndb,morkt/vndb,erengy/vndb,morkt/vndb