[test-release.sh] Add lldb to list of projects (disabled by default)

[hans]

LGTM

utils/release/test-release.sh

 do_debug="no"
 do_asserts="no"
 do_compare="yes"
 do_rt="yes"
 do_libs="yes"
 do_libunwind="yes"
 do_test_suite="yes"
 do_openmp="yes"
+do_lldb="no"
 BuildDir="`pwd`"
 use_autoconf="no"
 ExtraConfigureFlags=""
 ExportBranch=""
 
 function usage() {
     echo "usage: `basename $0` -release X.Y.Z -rc NUM [OPTIONS]"
     echo ""
function usage() {
     echo " -use-autoconf        Use autoconf instead of cmake"
     echo " -svn-path DIR        Use the specified DIR instead of a release."
     echo "                      For example -svn-path trunk or -svn-path branches/release_37"
     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 " -lldb                Enable check-out & build lldb"
+    echo " -no-lldb             Disable check-out & build lldb (default)"
 }
 
 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_libunwind="no"
             ;;
         -no-test-suite )
             do_test_suite="no"
             ;;
         -no-openmp )
             do_openmp="no"
             ;;
+        -lldb )
+            do_lldb="yes"
+            ;;
+        -no-lldb )
+            do_lldb="no"
+            ;;
         -help | --help | -h | --h | -\? )
             usage
             exit 0
             ;;
         * )
             echo "unknown option: $1"
             usage
             exit 1

 case $do_test_suite in
   yes|export-only)
     projects="$projects test-suite"
     ;;
 esac
 if [ $do_openmp = "yes" ]; then
   projects="$projects openmp"
 fi
+if [ $do_lldb = "yes" ]; then
+  projects="$projects lldb"
+fi
 
 # Go to the build directory (may be different from CWD)
 BuildDir=$BuildDir/$RC
 mkdir -p $BuildDir
 cd $BuildDir
 
 # Location of log files.
 LogDir=$BuildDir/logs
function export_sources() {
     for proj in $projects ; do
         case $proj in
         llvm)
             projsrc=$proj.src
             ;;
         cfe)
             projsrc=llvm.src/tools/clang
             ;;
+        lldb)
+            projsrc=llvm.src/tools/$proj
+            ;;
         clang-tools-extra)
             projsrc=llvm.src/tools/clang/tools/extra
             ;;
         compiler-rt|libcxx|libcxxabi|libunwind|openmp)
             projsrc=llvm.src/projects/$proj
             ;;
         test-suite)
             if [ $do_test_suite = 'yes' ]; then