Add detail to CUDA detections, better for issue reports

Download Link for AMD APP SDK 3.0 fixed

Incorrect Grammar fix

Improve the grammar of the Dev donation setting.

Docs - compilation RAM requirements

Grammar Fixes

Dev

adding qrl as a config option

Fix Spelling

changed chose to choose

release 2.4.7

increase version to 2.4.7

remove countype from version number

fix broken OpenCL 1.2 support

The coint type was set to a fixed value in one of the last released and has no meaning since we support many cryptonight coins.

- remove cointtype from version.cpp

OpenCl 1.2.is not allowing the subscript operator on buildin vector types.

fix: use `.sX` to access vector components

release 2.4.6

increase version to 2.4.6

cryptonight_bittube2

5% more hash per second

Grammar fixes; mmap alloc failed error remark for Arch Linux.

WebUI Relative Links

- add cryptonight_heavy derivate cryptonight_bittube2
- add coin bittube
- remove coin ipbc because this coin is now called bittube

Buffer output in each line

fix wrong miner algorithm in result data

fix #1708

The extension of the job result contains the wrong algorithm used to create the nonce.
The fix provide now the correct used algorithm even if the coin is forking to a new algorithm.

- forward the used algorithm from the miner

remove cryptonight coins

- remove all cryptonight coins (algorithm cryptonight can still be used)
- update README.md

add ryo currency

optimize cn-heavy AMD

- add ryo currency
- update documentation

- explicit loop unrolling

based on changes in @imperdin fork https://github.com/imperdin/xmr-stak/blob/master/xmrstak/backend/amd/amd_gpu/opencl/cryptonight.cl

Fixed fork version for currency 'electroneum'