Enable to specify disks with path to device file
or with symbolic link to the device file.

For example:
dstat -d -D /dev/vda2
dstat -d -D /dev/disk/by-id/scsi-SATA_Hitachi_HDP7250_GEA534RF3YYMMA-part3
dstat -d -D /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0-part2
dstat -d -D /dev/disk/by-uuid/6df45ed6-c4ad-4054-955d-b15102f2c566
Rename get_disklist() to basename() and move it out of the Options class to respective plugin classes.
Document new --bits option.
Make --help and man page consistent.
Update plugins/dstat_mysql5_cmds.py
Be explicit about python version
Fix dstat_battery.py for new sysfs interface
Added specific type and scale for each val

Useful for columns with various types and scales in the same plugin.
ZFS on Linux plugins

Data extracted from /proc/spl/kstat/zfs/ directory
Fix TypeError: remove param in gettermcolor() call

gettermcolor() signature changed in 62b3b539
Merge pull request #51 from michaelhood/fix/broken-gettermcolor-refactor

Fix TypeError: remove param in gettermcolor() call
Merge pull request #34 from svenstaro/master

Fix shebang and dstat_battery.py to work with non-deprecated distributions
Merge pull request #28 from carlhu/master

The new mysql 5.5 sql commands do not reset to zero.
Merge pull request #49 from rana-lessonae/master

Added specific type and scale for each val
Fix incorrect 'average' calculation for running/blocked processes

This fixes #25
Cosmetic change to docs
Document new --bits option.
Make --help and man page consistent.
Include CCISS disks in the default disk filter
Add todo item for %steal and %guest