fetch OpenAL Soft from Nuget on Windows

.gitignore

@@ -41,6 +41,7 @@ thirdparty/Mono.Nat.dll
 thirdparty/nuget.exe
 thirdparty/windows/lua51.dll
 thirdparty/windows/zlib1.dll
+thirdparty/windows/soft_oal.dll
 
 # backup files by various editors
 *~

thirdparty/fetch-thirdparty-deps-windows.sh

@@ -3,6 +3,10 @@
 # Die on any error for Travis CI to automatically retry:
 set -e
 
+if [ ! -d windows ]; then
+	mkdir windows
+fi
+
 if [ ! -f windows/SDL2.dll ]; then
 	echo "Fetching SDL2 from nuget"
 	nuget install sdl2 -Version 2.0.3
@@ -31,3 +35,9 @@ if [ ! -f windows/zlib1.dll ]; then
 	rm -rf zlib.redist.1.2.8.7
 fi
 
+if [ ! -f windows/soft_oal.dll ]; then
+	echo "Fetching OpenAL Soft from nuget"
+	nuget install OpenAL-Soft -Version 1.16.0
+	cp ./OpenAL-Soft.1.16.0/bin/Win32/soft_oal.dll windows/soft_oal.dll
+	rm -rf OpenAL-Soft.1.16.0
+fi

thirdparty/fetch-thirdparty-deps.ps1

@@ -97,3 +97,11 @@ if (!(Test-Path "windows/zlib1.dll"))
 	cp zlib.redist.1.2.8.7/build/native/bin/v120/Win32/Release/dynamic/stdcall/zlib.dll windows/zlib1.dll
 	rmdir zlib.redist.1.2.8.7 -Recurse
 }
+
+if (!(Test-Path "windows/soft_oal.dll"))
+{
+	echo "Fetching OpenAL Soft from NuGet."
+	./nuget.exe install OpenAL-Soft -Version 1.16.0
+	cp OpenAL-Soft.1.16.0/bin/Win32/soft_oal.dll windows/soft_oal.dll
+	rmdir OpenAL-Soft.1.16.0 -Recurse
+}