[test-release.sh] Enable Polly by default

[hans]

Looks good to me. Let's see what happens :-)

+Tom fyi

[grosser]

LGTM as well!

utils/release/test-release.sh

 do_compare="yes"
 do_rt="yes"
 do_libs="yes"
 do_libunwind="yes"
 do_test_suite="yes"
 do_openmp="yes"
 do_lld="yes"
 do_lldb="no"
-do_polly="no"
+do_polly="yes"
 BuildDir="`pwd`"
 ExtraConfigureFlags=""
 ExportBranch=""
 
 function usage() {
     echo "usage: `basename $0` -release X.Y.Z -rc NUM [OPTIONS]"
     echo ""
     echo " -release X.Y.Z       The release version to test."
function usage() {
     echo " -no-rt               Disable check-out & build Compiler-RT"
     echo " -no-libs             Disable check-out & build libcxx/libcxxabi/libunwind"
     echo " -no-libunwind        Disable check-out & build libunwind"
     echo " -no-test-suite       Disable check-out & build test-suite"
     echo " -no-openmp           Disable check-out & build libomp"
     echo " -no-lld              Disable check-out & build lld"
     echo " -lldb                Enable check-out & build lldb"
     echo " -no-lldb             Disable check-out & build lldb (default)"
-    echo " -polly               Enable check-out & build Polly"
-    echo " -no-polly            Disable check-out & build Polly (default)"
+    echo " -no-polly            Disable check-out & build Polly"
 }
 
 while [ $# -gt 0 ]; do
     case $1 in
         -release | --release )
             shift
             Release="$1"
             Release_no_dot="`echo $1 | sed -e 's,\.,,g'`"
case $1 in
             do_lld="no"
             ;;
         -lldb )
             do_lldb="yes"
             ;;
         -no-lldb )
             do_lldb="no"
             ;;
-        -polly )
-            do_polly="yes"
-            ;;
         -no-polly )
             do_polly="no"
             ;;
         -help | --help | -h | --h | -\? )
             usage
             exit 0
             ;;
         * )