Tools for people envious of nvidia's blob driver.

Contents:

* docs: plain-text documentation of the GPUs, nVidia binary driver, and
the tools (in-sync HTML version at http://envytools.rtfd.org)
* envydis: Disassembler and assembler for various ISAs found on nvidia GPUs
* rnn: Tools and libraries for the rules-ng-ng XML register database format
* rnndb: rnn database of nvidia MMIO registers, FIFO methods, and memory structures.
* nvbios: Tools to decode the card description structures found in nvidia VBIOS
* nva: Tools to directly access the GPU registers
* vstream: Tools to decode and encode raw video bitstreams
* vdpow: A tool aiding in VP3 reverse engineering
* easm: Utility code dealing with assembly language parsing & printing.
* util: Misc utility code shared between envytools modules

Some parts of envytools can be disabled with:
HWTEST="no" NVA="no" VDPOW="no" ./envytools.SlackBuild

Both hwtest and vdpow require nva.

Some optional dependencies include cudatoolkit, libseccomp, and python3.
