Build 32-bit binaries only in deployment mode

scripts/macosx-build-dependencies.sh

@@ -28,6 +28,7 @@ OPTION_32BIT=true
 OPTION_LLVM=false
 OPTION_CLANG=false
 OPTION_GCC=false
+OPTION_DEPLOY=false
 DETECTED_LION=false
 DETECTED_MOUNTAIN_LION=false
 export QMAKESPEC=macx-g++
@@ -423,6 +424,12 @@ else
   MAC_OSX_VERSION_MIN=10.5
 fi
 
+if $OPTION_DEPLOY; then
+  echo "Building deployment version of libraries"
+else
+  OPTION_32BIT=false
+fi
+
 if $OPTION_32BIT; then
   echo "Building combined 32/64-bit binaries"
 else