Fix ports to pass generic options which work with new and old drivers

ports/speex/build.sh

Index: ports/speex/build.sh
diff --git a/ports/speex/build.sh b/ports/speex/build.sh
new file mode 100644
index 0000000000000000000000000000000000000000..3a5664ddf2fcab8fd296d700d14b345ac30fc241
--- /dev/null
+++ b/ports/speex/build.sh
@@ -0,0 +1,14 @@
+# Copyright (c) 2016 The Native Client Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+BuildStep() {
+  export CFLAGS="${NACLPORTS_CPPFLAGS} ${NACLPORTS_CFLAGS}"
+  export CXXFLAGS="${NACLPORTS_CPPFLAGS} ${NACLPORTS_CXXFLAGS}"
+}
+
+
+InstallStep() {
+  export CFLAGS="${NACLPORTS_CPPFLAGS} ${NACLPORTS_CFLAGS}"
+  export CXXFLAGS="${NACLPORTS_CPPFLAGS} ${NACLPORTS_CXXFLAGS}"
+}