support for solo mining on wallet 1.7 and support rtx 30xx

• upgraded to msvc 2019
• added support for rtx 30xx gpu
• fix solo mining so it can mine on tecra wallet 1.7
• fix for potential issue while compiling with cuda 11.2
• currently compiled for cuda 11.1 due to performance issues with Pascal Gpu when compiled with cuda 11.2

update solo mining with new wallet reward scheme

reflects on ccminer solo mining changes in wallet regarding the reward change at block 500k

fix high cpu usage for mtp-tcr/mtp-classic (pool and solo)

fix high cpu usage for mtp-tcr (both pool and solo) and for mtp-classic.
cpu usage stays around 0-0.1% as it was before the changes in gpu driver of last year.

There is no need anymore for --cpu-affinity 2.
Windows version is compiled with cuda 10.2 and required recent drivers (latest best)

ccminer fix for high cpu usage

fix high cpu usage which remains while mining around 0-0.1% as it was before the changes in gpu driver of last year

• There is no need anymore for --cpu-affinity 2.

Windows version is compiled with cuda 10.2 and required recent drivers (latest best)

decrease cpu usage with latest nvidia drivers

• reduce cpu usage on latest nvidia drivers. The cpu should have at least 2 cores or 2 threads (if single core).

This version allows to have a stable 100% gpu usage on all gpu while using --cpu-affinity 1

You need to add to the ccminer command line: --cpu-affinity 1 (or 2 or 4).
This will assign all the mining threads to a single thread (it is mandatory that this thread is different from thread 0, hence the cpu-affinity)

The cpu usage will be the one you would get if your system had only one gpu.

This version may also improve the running on multigpu system (to confirm)

ccminer

• prevent ccminer from sending outdated shares

solo mining with mtp-tcr

Procedure for pool mining:

ccminer -a mtp-tcr -o stratum+tcp://pool-mtp.tecracoin.io:4560 -u TPkxM1Aw872FL9gs4udCDzy5hAG7M7sVSE -p 0,d=0.032

This new version of ccminer also allows solo mining on mtp-tcr.

Procedure for solo mining.

• wallet side
  edit or create the file tecracoin.conf and add these informations to allow mining (this is an example):
  server=1
  rpcuser=djm34
  rpcpassword=password
  rpcport=8382
  rpcallowip=127.0.0.1 (if the IP address of the miner is the same as the one of the wallet), otherwise it should be the address of the miner)

• in the miner command line:
  ccminer -a mtp-tcr -o http://127.0.0.1:8382 -u djm34 -p password --coinbase-addr TPkxM1Aw872FL9gs4udCDzy5hAG7M7sVSE --no-getwork --no-stratum -i 20

In the case of the wallet is on a different machine http:// should point to the IP of the machine where the wallet is located and in the wallet config, rpcallowip to the address of machine where the miner is located

The address given in --coinbase-addr, does not need to an address of the wallet to which the miner is connected any tecracoin address should work.

ATTENTION: for rpcuser and rpcpassword chose non obvious one especially if you are connecting outside of a private network as they could be used to steal your fund... (probably not with rpcallowip, although this one should be kept as restrictive as possible)

ccminer with mtp-tcr

Correct a memory leak responsible for cudaErrorMemoryAllocation being displayed (and consequently followed by a crash) when the system exhaust swap memory/RAM within hours...

ccminer with mtp-tcr

• version bump
• suppress donation for mtp-tcr, which existed from mtp/zcoin. It wasn't working on mtp-tcr however it was causing a temporary deconnection from the pool.

ccminer with mtp-tcr

lastest version of ccminer with mtp-tcr.
fix an issue which may cause crashes on linux.