moved rocks-command and pylib inside rocks-pylib

This commit merges both rocks-command and pylib into a single
package rocks-pylib under the folder rocks-pylib.

The new package maintains the python package structure e.g.:
import rocks.commands.list
is now under
rocks/commands/list
pylib: adding RollName variable in the files

several reasons:
 - it is now faster to run make install when doing development
 - this property never changes so it should be in git
 - install script is easier

to automatically set the variable to new files run:
make addrollvariable
rocks-sql: remove unused file staterc