Update to OpenAL 1.20.1.

OpenAL versions beyond 1.20 will require C++ 14 instead of 11, requiring
an update to hxcpp.

This update resolves
https://github.com/kcat/openal-soft/pull/227

project/lib/overrides/openal/include/config-android.h

@@ -14,6 +14,9 @@
 /* Define a built-in call indicating an aligned data pointer */
 #define ASSUME_ALIGNED(x, y) x
 
+/* Define a restrict macro for non-aliased pointers */
+#define RESTRICT __restrict
+
 /* Define if HRTF data is embedded in the library */
 #define ALSOFT_EMBED_HRTF_DATA
 

project/lib/overrides/openal/include/config-linux-x86_64.h

@@ -14,6 +14,9 @@
 /* Define a built-in call indicating an aligned data pointer */
 #define ASSUME_ALIGNED(x, y) x
 
+/* Define a restrict macro for non-aliased pointers */
+#define RESTRICT __restrict
+
 /* Define if HRTF data is embedded in the library */
 #define ALSOFT_EMBED_HRTF_DATA
 

project/lib/overrides/openal/include/config-macos-x86_64.h

@@ -14,6 +14,9 @@
 /* Define a built-in call indicating an aligned data pointer */
 #define ASSUME_ALIGNED(x, y) x
 
+/* Define a restrict macro for non-aliased pointers */
+#define RESTRICT __restrict
+
 /* Define if HRTF data is embedded in the library */
 #define ALSOFT_EMBED_HRTF_DATA
 

project/lib/overrides/openal/include/config-windows-x86.h

@@ -33,6 +33,9 @@
 /* Define a built-in call indicating an aligned data pointer */
 #define ASSUME_ALIGNED(x, y) x
 
+/* Define a restrict macro for non-aliased pointers */
+#define RESTRICT __restrict
+
 /* Define if HRTF data is embedded in the library */
 #define ALSOFT_EMBED_HRTF_DATA
 

project/lib/overrides/openal/include/config-windows-x86_64.h

@@ -18,6 +18,9 @@
 /* Define a built-in call indicating an aligned data pointer */
 #define ASSUME_ALIGNED(x, y) x
 
+/* Define a restrict macro for non-aliased pointers */
+#define RESTRICT __restrict
+
 /* Define if HRTF data is embedded in the library */
 #define ALSOFT_EMBED_HRTF_DATA