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release 2.4.3

version update to 2.4.3

BBSCoin support and get ready for cryptonight v7 upgrade

CUDA 8 deprecation warning silencer

Update ITNS with v4 fork to CN v1

- fix dev pool algorithms
- add note to `pools.tpl`
- remove pool suggestion

Official Announcement: https://intensecoin.com/2018/04/16/imminent-hard-fork-and-network-attack/

fix wrong unique_lock usage

Use EXECUTABLE_OUTPUT_PATH and LIBRARY_OUTPUT_PATH

clang warns about the wrong usage:
```
```
xmrstak/net/jpsock.cpp:232:30: warning: parentheses were disambiguated as redundant parentheses around declaration of variable named 'job_mutex' [-Wvexing-parse]
        std::unique_lock<std::mutex>(job_mutex);
                                    ^~~~~~~~~~~
xmrstak/net/jpsock.cpp:232:30: note: add a variable name to declare a 'std::unique_lock<std::mutex>' initialized with 'job_mutex'
        std::unique_lock<std::mutex>(job_mutex);
```

fix wrong algo selection

Use EXECUTABLE_OUTPUT_PATH and LIBRARY_OUTPUT_PATH to control the path to which the executable and libraries are installed.

remove fork version for sumokoin and monero7

Dev

- allow the dev pool to fork on a different block version than the user descriped coin

All algorithm are centered around the user coin description.
It is allowed to have two two different coin algorithms in the user coin description.
It is only allowed to use algorithms for the dev pool coin description those are used in the user coin description.
There are two ways to define a non forking coin.
  - set both user coin algorithm descriptions to the same algorithm and set version to zero
  - set the first algorithm in the user coin description to something you like to use in the dev pool
    and set the second algorithm to the correct representation of the coin. Set the version to 255.
    This will allow that the dev pool can mine on a different coin algorithm than the not forking user coin.
    Do not use an algorithm with different scratchpad size for the dev pool.

In the case where the dev pool mines on a higher version than a monero fork coin the miner is not resetting the algorithm.
This PR select the correct algorithm each time the block version hash changed.

allow non AMD OpenCL driver and devices

expose original algorithm

fix conversion warnings

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- add CLI flag to explicitly use non AMD OpenCL and devices
- adjust OpenCL output (use OpenCL instead of AMD if --altOpenCL is sued)
- optimize NVIDIA OpenCL auto suggestion

- fix conversion from large type tp small

avoid conversion warning by reducing the size value type

- expose cryptonight_lite_v7, cryptonight_heavy and cryptonight_v7
- remove cryptonight_lite

Update graft algorithm setting for graft fork

Graft is forking soon, with updated software released yesterday, to what
will be v8 in Graft (current Graft cryptonight algorithm is graft v7).
This commit updates the `graft` algorithm to recognize the fork and
switch algorithms.

Fork annoucement:
https://www.graft.network/2018/04/12/patch-1-1-1-released-major-network-update-block-65110/

Fix FAQ link