fix player tracking for minecraft 1.7.2

don't use pygtail anymore since it doesnt support gzipped logs
fix log rotate scripts to work with 1.7.2
remove log rotation (since 1.7.2 does it now)

- disable msm logroll
- disable logroll on pre shutdown backup
Merge commit 'd107c08a81023bcb867b629cdf7a4b219103c25a'