This patch also prevents the dynamic loading of the rtc_drv when
executed on Linux, which is needed because this version of the rtc_drv
is a hybrid Linux/Genode program.
Provides recipes for deploying python3 on sculpt.
Also adds the feature of triggering the execution of python scripts
on ROM updates (see python3.run).
The vfs is now populated with the python libs using a tar file system.
This is necessary because providing the zip from the rom did not work on NOVA.
The issue here is that python's zipimporter uses fseek with SEEK_END to
find the zip header. Unfortunately, the file size cannot be correctly
determined from the ROM session (see #1920) so that the fseek fails.
