Fix a bug introduced in rev.1.23 - for some reason mkdir("/", ...) system call returns `EISDIR', not `EEXIST', so that be prepared for that. This should fix number of ports, that often call `mkdir -p //usr/local/foobar'. This is just a quick workaround, the real fix would be either to avoid calling mkdir("/", ...) or fix VFS code to return consistent errno for this case.
Fix a bug introduced in rev.1.23 - for some reason mkdir("/", ...) system
call returns `EISDIR', not `EEXIST', so that be prepared for that. This should
fix number of ports, that often call `mkdir -p //usr/local/foobar'. This
is just a quick workaround, the real fix would be either to avoid calling
mkdir("/", ...) or fix VFS code to return consistent errno for this case.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase