lib/file: Reduce the create directory spam

lib/file: Reduce the create directory spam

The lib/file primitives (e.g. create file, create directory) may fail -
but they also return errno/GetLastError. The caller should inspect a
failure and decide what to do (or log). The lib/file primitives should
not log. The client should do that. The primitives are the high
performance path and failure isn't necessarily a failure, only the
client can decide.

The lib/file primitives (e.g. create file, create directory) may fail -
but they also return errno/GetLastError. The caller should inspect a
failure and decide what to do (or log). The lib/file primitives should
not log. The client should do that. The primitives are the high
performance path and failure isn't necessarily a failure, only the
client can decide.