For CI - fix release tag packaging for master branch.

.travis.yml

@@ -106,7 +106,8 @@ before_script:
   - rake ci_timer
   - export COMMIT_MESSAGE=$(git log --format=%B -n 1 $TRAVIS_COMMIT)
   - export TAG=$(git describe --exact-match $TRAVIS_COMMIT 2>/dev/null); if [[ $TAG =~ [[:digit:]]+\.[[:digit:]]+ ]]; then export RELEASE_TAG=$TAG; fi
-  - if [ "$TRAVIS_BRANCH" == "master" ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then if [ ${TRAVIS_JOB_NUMBER##*.} == 1 ]; then export SITE_UPDATE=1; fi; if [ "$CC" == "gcc" ] && ([ $RELEASE_TAG ] || echo $COMMIT_MESSAGE |grep -cq '\[ci package\]'); then export PACKAGE_UPLOAD=1; fi; fi
+  # Travis-CI has a special case handling for release tag where it checks out directly from the tag branch instead of the default 'master' branch
+  - if [ $RELEASE_TAG ] || ([ "$TRAVIS_BRANCH" == "master" ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]); then if [ ${TRAVIS_JOB_NUMBER##*.} == 1 ]; then export SITE_UPDATE=1; fi; if [ "$CC" == "gcc" ] && ([ $RELEASE_TAG ] || echo $COMMIT_MESSAGE |grep -cq '\[ci package\]'); then export PACKAGE_UPLOAD=1; fi; fi
   - if [ $LINUX ]; then if [ "$URHO3D_64BIT" == "0" ]; then export CMAKE_PREFIX_PATH=/usr/lib/i386-linux-gnu; else export DISPLAY=:99.0; bash -e /etc/init.d/xvfb start; fi; fi
   - if [ $WIN32 ]; then if [ "$URHO3D_64BIT" == "0" ]; then export ARCH=i686; else export ARCH=x86_64; fi && export MINGW_PREFIX=/usr/bin/${ARCH}-w64-mingw32; fi
   # MinGW package on Ubuntu 12.04 LTS does not come with d3dcompiler.h file which is required by our CI build with URHO3D_OPENGL=0.