Avoid shallow git clones in travis.

Author: pavoljuhas

.travis.yml

@@ -10,6 +10,9 @@ branches:
   except:
     - /^v[0-9]/
 
+git:
+  depth: 999999
+
 env:
   global:
     - MYPYTHON_VERSION=2.7
@@ -23,7 +26,7 @@ matrix:
       env: MYUSEMC=false
 
 before_install:
-  - git fetch origin --unshallow --tags
+  - git fetch origin --tags
   - if ${MYUSEMC}; then
         NOAPT=true; NOMC=false;
     else