Merge branch 'git-version' into 'master'

Install Git 2.7.3, not 2.4.3



See merge request !3248

doc/install/installation.md

@@ -89,8 +89,9 @@ Is the system packaged Git too old? Remove it and compile from source.
 
     # Download and compile from source
     cd /tmp
-    curl -L --progress https://www.kernel.org/pub/software/scm/git/git-2.4.3.tar.gz | tar xz
-    cd git-2.4.3/
+    curl -O --progress https://www.kernel.org/pub/software/scm/git/git-2.7.3.tar.gz
+    echo '30d067499b61caddedaf1a407b4947244f14d10842d100f7c7c6ea1c288280cd  git-2.7.3.tar.gz' | shasum -a256 -c - && tar -xzf git-2.7.3.tar.gz
+    cd git-2.7.3/
     ./configure
     make prefix=/usr/local all
 
@@ -143,7 +144,7 @@ use 64-bit Linux. You can find downloads for other platforms at the [Go download
 page](https://golang.org/dl).
 
     curl -O --progress https://storage.googleapis.com/golang/go1.5.3.linux-amd64.tar.gz
-    echo '43afe0c5017e502630b1aea4d44b8a7f059bf60d7f29dfd58db454d4e4e0ae53  go1.5.3.linux-amd64.tar.gz' | shasum -c - && \
+    echo '43afe0c5017e502630b1aea4d44b8a7f059bf60d7f29dfd58db454d4e4e0ae53  go1.5.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
       sudo tar -C /usr/local -xzf go1.5.3.linux-amd64.tar.gz
     sudo ln -sf /usr/local/go/bin/{go,godoc,gofmt} /usr/local/bin/
     rm go1.5.3.linux-amd64.tar.gz