configure.ac: print LLVM_LDFLAGS

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Emil Velikov <emil.l.velilkov@gmail.com>
diff --git a/configure.ac b/configure.ac
index 9e8c1d8..6ccf3b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2543,6 +2543,7 @@
     echo "        LLVM_CFLAGS:     $LLVM_CFLAGS"
     echo "        LLVM_CXXFLAGS:   $LLVM_CXXFLAGS"
     echo "        LLVM_CPPFLAGS:   $LLVM_CPPFLAGS"
+    echo "        LLVM_LDFLAGS:    $LLVM_LDFLAGS"
     echo ""
 fi
 echo "        PYTHON2:         $PYTHON2"