Remove assert statement from make_update.py, making it ready for any
architecture.
Add riscv 32, 64 and 128 bit cpu architecture with little/big endian
to Blender's BLI_build_config.h and Libmv's build_config.h
Tested (to compile) on riscv64 little endian machine.
Pull Request: https://projects.blender.org/blender/blender/pulls/130920
f662caf722