Upgrade Hunter to 0.21.9

.travis.yml

@@ -29,10 +29,10 @@ before_install: |
     if [ "$TRAVIS_OS_NAME" = linux ]; then
       scripts/install_cmake.sh
       pyenv global 3.6
-      pip install --user requests
+      pip install --user requests gitpython
     elif [ "$TRAVIS_OS_NAME" == "osx" ]; then
       HOMEBREW_NO_AUTO_UPDATE=1 brew install -q python3
-      pip3 install -q requests
+      pip3 install -q requests gitpython
     fi
 script:
     - cmake -DHUNTER_JOBS_NUMBER=4 -DETHASHCUDA=$CUDA -DETHASHCL=ON -DAPICORE=ON -H. -Bbuild

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 3.5)
 
 include(cmake/cable/bootstrap.cmake)
 
@@ -9,13 +9,13 @@ include(HunterGate)
 
 include(defaults/HunterCacheServers)
 
-cable_configure_toolchain(DEFAULT cxx11-c99)
+cable_configure_toolchain(DEFAULT cxx11)
 
 set(HUNTER_CONFIGURATION_TYPES Release CACHE STRING "Build type of Hunter packages")
 set(HUNTER_JOBS_NUMBER 6 CACHE STRING "Number of parallel builds used by Hunter")
 HunterGate(
-    URL "https://github.com/ruslo/hunter/archive/v0.20.73.tar.gz"
-    SHA1 "5cd594b2bb12b2d66983a40b230f760187abbe5a"
+    URL "https://github.com/ruslo/hunter/archive/v0.21.9.tar.gz"
+    SHA1 "0056188988906abb63a06c6f1aaef01832c62b74"
     LOCAL
 )
 

appveyor.yml

@@ -21,7 +21,7 @@ install: |
   appveyor DownloadFile https://github.com/ethereum/cpp-dependencies/releases/download/cache/CUDA-v9.0-WindowsServer2012.zip
   7z x CUDA-v9.0-WindowsServer2012.zip -oC:\
   set PATH=C:\Python36-x64;C:\Python36-x64\Scripts;%PATH%;C:\CUDA\v9.0\bin
-  pip install requests
+  pip install requests gitpython
   nvcc -V
 
 build_script:

circle.yml

@@ -4,7 +4,7 @@ jobs:
     docker:
       - image: nvidia/cuda:9.1-devel-ubuntu16.04
     steps:
-      - run: apt-get update && apt-get install -qy git cmake mesa-common-dev libidn11-dev python3-requests
+      - run: apt-get update && apt-get install -qy git cmake mesa-common-dev libidn11-dev python3-requests python3-git
 
       - checkout
       - run: git submodule update --init --recursive