core: download debian package libcpputest-dev from weechat.org (Travis CI)

.travis.yml

@@ -12,7 +12,9 @@ before_script:
     - echo 'APT::Install-Recommends "false";' | sudo tee -a /etc/apt/apt.conf
     - sudo add-apt-repository --yes ppa:bcandrea/backports
     - sudo apt-get update -qq
-    - sudo apt-get -y install devscripts equivs python-pip libenchant-dev autopoint libcpputest-dev
+    - wget http://weechat.org/files/tests/cpputest/libcpputest-dev_3.4-3_i386.deb
+    - sudo dpkg -i libcpputest-dev_3.4-3_i386.deb
+    - sudo apt-get -y install devscripts equivs python-pip libenchant-dev autopoint
     - sudo mk-build-deps -i debian/control
     - sudo pip install msgcheck pylint