Fix travis build

.travis.yml

@@ -7,7 +7,7 @@ branches:
     - next
 before_install:
  - pwd
- - git submodule update --init --recursive
+ - git fetch --tags
  - echo "yes" | sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu `lsb_release -sc` main universe restricted multiverse"
  - echo "yes" | sudo apt-add-repository ppa:openmw/openmw
  - sudo apt-get update -qq

CMakeLists.txt

@@ -20,7 +20,7 @@ include(OpenMWMacros)
 
 include(GetGitRevisionDescription)
 
-get_git_tag_revision(TAGHASH --tags --max-count=1)
+get_git_tag_revision(TAGHASH --tags --max-count=1 "HEAD...")
 get_git_head_revision(REFSPEC COMMITHASH)
 git_describe(VERSION --tags ${TAGHASH})