Prior to this commit, some access log entries were not in the common log
format, e.g. missing the IP address.  This commit uses perl to only
process valid lines.

Add a PCRE regex for CLF files

Instead, we use globstar and ls.  This is bad, but easier than figuring
out the differences in find, xargs, sort, etc.  Since we should only be
parsing our log files, the changes of spaces in filesnames is low

Also add it to the interactive component.

Add command for largest facts