remove branch differgences in AMD OpenCl code based on #454

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Update compile_Windows.md - Minor Spelling error

Typo: Obtaning -> Obtaining

fix minor spelling error

On-demand elevation

Add messages


Missing include


1

Link API documentation

Add option to enable web interface from cli

Clearer TLS error

update check sums for version 2.2.0

increase version to 2.2.0

Make sure we are using a steady clock

fix static compile with non gnu compiler

Stop UAC popup for elevated ctx

remove adding compiler flags `-static-...` if compiler is not a gnu compiler

Add altcoin list

for CentOS, do scl without sudo

Update tuning.md

Link windows to anchor

Update CMakeLists.txt

I ran into a problem following these instructions, and this change got me past it.

The command in question enables access to the C++ compiler (puts it on the PATH or something like that).  If you do it with `sudo`, it leaves you at a root shell prompt.  If you then exit that root prompt, to go back to non-root, then g++ is no longer accessible.  If you want to compile as non-root, then you need to do `scl` as non-root.

The github online editor is injecting tabs for some reason, fixed them.

Adjust spacing and pathing based on review feedback.

Fix typo in socket.cpp

fix windows compile with CUDA 9.1

readd appveyor xmr-stak runtime test

handle cuda error codes

fix cuda9.1 compile