Upload release builds to 'sysbench' repo, other ones to 'sysbench-prereleases'.

.travis.yml

@@ -102,6 +102,16 @@ addons:
     - clang-3.6
 
 before_install:
+  # Upload builds corresponding to release tags to the 'sysbench'
+  # repository, push other ones to 'sysbench-prereleases'
+  - commits=$(git describe --long --always |
+  sed -n 's/^\([0-9\.]*\)-\([0-9]*\)-\([a-z0-9]*\)/\2/p')
+  - >
+    if [ ${commits:-0} = 0 ]; then
+      PACKAGECLOUD_REPO=sysbench
+    else
+      PACKAGECLOUD_REPO=sysbench-prereleases
+    fi
   - >
     if [ "x$TARGET" = "xtest" ]; then
       case "${TRAVIS_OS_NAME:-linux}" in