[merb-core] Better error handling for creating log file
[merb-core] Better error handling for creating log file

If the log/ directory doesn't exist, we should create it (mkdir -p) so the app doesnt throw an error when trying to initialize the log file in production mode.

[#1300 state:resolved]

wycats/merb,wycats/merb,merb/merb,merb/merb,wycats/merb,wycats/merb,wycats/merb,merb/merb