By default, openocd searches for scripts in DATAROOTDIR/openocd/scripts.
This of course makes it not relocatable. Conda has a flag to try to
detect and fix such hardcoded paths, but it does not work on openocd
(likely because the .rodata contains an already concatenated path,
which cannot be padded with zeroes from the right).
So, we pass the path explicitly instead.
This requires recompiling and flashing the runtime and the entire
storage area file system (ip address and idle kernel).
* with ppp the runtime is larger than 0x40000 now
* 0x60000 for the runtime should give enough space for a while,
even including a fatter scheduler or runtime components
in other languages
* for both pipistrello and kc705 this leaves the unused space
starting at a nice round number
* the relevant flashes nowadays are 0x1000000 large