make-tarball: replace realpath with readlink -f

http://unix.stackexchange.com/questions/101080/realpath-command-not-found

.travis.yml

@@ -6,9 +6,6 @@ env:
 matrix:
     fast_finish: true
     include:
-        - os: linux
-          compiler: gcc
-          env: BUILD_TYPE=tarball
         - os: linux
           compiler: gcc
           env: BUILD_TYPE=normal
@@ -24,6 +21,9 @@ matrix:
         - os: osx
           compiler: clang
           env: BUILD_TYPE=normal
+        - os: linux
+          compiler: gcc
+          env: BUILD_TYPE=tarball
 before_install:
     - "echo os: [$TRAVIS_OS_NAME] build: [$BUILD_TYPE]"
     - if [[ "$BUILD_TYPE" == "normal" || "$BUILD_TYPE" == "tarball" ]]; then export CFGFLAGS= MYCXXFLAGS= MYLDFLAGS=; fi

make-tarball.sh

@@ -35,7 +35,7 @@ else
 	# DESC="-rc1"
 fi
 
-TARGZ=`realpath $TARGZ`
+TARGZ=`readlink -f -- $TARGZ`
 
 echo "Exporting . to $TMPDIR/$ZNCDIR..."
 git checkout-index --all --prefix=$TMPDIR/$ZNCDIR/