Merge branch 'ls/travis-enable-httpd-tests' into maint

Allow http daemon tests in Travis CI tests.

* ls/travis-enable-httpd-tests:
travis-ci: enable web server tests t55xx on Linux

diff --combined .travis.yml
index c2b76f9b7ea0bfa76720d3c1867ad148c35fa858,3c5408084c80b989059bff9f2918d6f164328d24..477c3d2efb7b94bb34fcda517b1b855e98e1f43a
--- 1/.travis.yml
--- 2/.travis.yml
+++ b/.travis.yml
@@@ -18,7 -18,7 +18,8 @@@ addons
    apt:
      packages:
      - language-pack-is
 +    - git-svn
+     - apache2
  
  env:
    global:
@@@ -31,6 -31,7 +32,7 @@@
      - DEFAULT_TEST_TARGET=prove
      - GIT_PROVE_OPTS="--timer --jobs 3 --state=failed,slow,save"
      - GIT_TEST_OPTS="--verbose --tee"
+     - GIT_TEST_HTTPD=true
      - GIT_TEST_CLONE_2GB=YesPlease
      # t9810 occasionally fails on Travis CI OS X
      # t9816 occasionally fails with "TAP out of sequence errors" on Travis CI OS X
@@@ -82,8 -83,6 +84,8 @@@ before_install
        brew tap homebrew/binary --quiet
        brew_force_set_latest_binary_hash perforce
        brew_force_set_latest_binary_hash perforce-server
 +      # Uncomment this if you want to run perf tests:
 +      # brew install gnu-time
        brew install git-lfs perforce-server perforce gettext
        brew link --force gettext
        ;;