Enable XAudio2 for Windows vcpkg build.

Add necessary headers to the dependencies submodule and default the
cmake option to on.

Signed-off-by: Rafael Kitover <rkitover@gmail.com>

dependencies

@@ -1 +1 @@
-Subproject commit fa2265a8bedfbdc6169d9891c79320c76b7b0dd1
+Subproject commit 605765f55dccc515a9b3b934a7718321f14e3d56

po/wxvbam/wxvbam.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-02-17 08:32+0000\n"
+"POT-Creation-Date: 2020-02-24 20:36+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -1126,6 +1126,22 @@ msgstr ""
 msgid "Disconnected game controller %d"
 msgstr ""
 
+#: xaudio2.cpp:35
+msgid "XAudio2: Enumerating devices failed!"
+msgstr ""
+
+#: xaudio2.cpp:69 xaudio2.cpp:353
+msgid "The XAudio2 interface failed to initialize!"
+msgstr ""
+
+#: xaudio2.cpp:384
+msgid "XAudio2: Creating mastering voice failed!"
+msgstr ""
+
+#: xaudio2.cpp:393
+msgid "XAudio2: Creating source voice failed!"
+msgstr ""
+
 #: dsound.cpp:90 dsound.cpp:104
 #, c-format
 msgid "Cannot create DirectSound %08x"

src/wx/CMakeLists.txt

@@ -26,11 +26,7 @@ if(WIN32)
     # not yet implemented
     option(ENABLE_DIRECT3D "Enable Direct3D rendering for the wxWidgets port" OFF)
 
-    if(NOT CMAKE_TOOLCHAIN_FILE MATCHES vcpkg)
-        option(ENABLE_XAUDIO2 "Enable xaudio2 sound output for the wxWidgets port" ON)
-    else()
-        option(ENABLE_XAUDIO2 "Enable xaudio2 sound output for the wxWidgets port" OFF)
-    endif()
+    option(ENABLE_XAUDIO2 "Enable xaudio2 sound output for the wxWidgets port" ON)
 endif()
 
 option(ENABLE_FAUDIO "Enable FAudio sound output for the wxWidgets port" OFF)