Use patched libao in order to support OSX without copying plugins (#295)

maclibs/scripts/libao-build.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+# $1 - GoldenDict source directory
+
+if [ ${OSTYPE:0:6} != "darwin" ]; then
+  echo "OSX Only"
+  exit 1
+fi
+
+
+if [[ -n "$1" && ! -d "$1" ]]; then
+  echo "Invalid GoldenDict source directory"
+  exit 1
+fi
+
+./configure \
+  CFLAGS="-arch i386 -arch x86_64 -DCUSTOM_AO_PLUGIN_PATH=\\\"@executable_path/../Frameworks/ao\\\"" \
+  LDFLAGS="-arch i386 -arch x86_64" \
+  --disable-dependency-tracking
+
+make clean && make
+
+
+install_name_tool \
+  -id @executable_path/../Frameworks/libao.dylib \
+  src/.libs/libao.dylib
+
+for PLUGIN_DIR in `find src/plugins -type d -maxdepth 1`; do
+  PLUGIN_NAME=$(basename "$PLUGIN_DIR")
+  PLUGIN_PATH=$PLUGIN_DIR/.libs/lib$PLUGIN_NAME.so
+  if [ -f "$PLUGIN_PATH" ]; then
+    install_name_tool \
+      -id @executable_path/../Frameworks/ao/$PLUGIN_NAME.so \
+      $PLUGIN_PATH
+  fi
+done
+
+if [ -n "$1" ]; then
+  cp src/.libs/libao.dylib $1/maclibs/lib
+  # Copy plugins
+  mkdir -p $1/maclibs/lib/ao
+  find src/plugins -type f -maxdepth 3 -name "*.so" -exec cp {} $1/maclibs/lib/ao \;
+fi

maclibs/scripts/libao.txt

@@ -0,0 +1,9 @@
+Patched libao source for OSX can be found here:
+https://github.com/timonwong/libao/tree/goldendict
+
+You can checkout the source directly using git:
+  git clone -b goldendict https://github.com/timonwong/libao.git
+
+Then, copy libao-build.sh (along with this file) to libao source directory, and build using following commands:
+  chmod +x libao-build.sh
+  ./libao-build.sh [goldendict source directory]