Added OpenAL-Soft 1.16.0.

libs/openal-soft/cmake/FindOSS.cmake

@@ -0,0 +1,21 @@
+# - Find OSS includes
+#
+#   OSS_FOUND        - True if OSS_INCLUDE_DIR is found
+#   OSS_INCLUDE_DIRS - Set when OSS_INCLUDE_DIR is found
+#
+#   OSS_INCLUDE_DIR - where to find sys/soundcard.h, etc.
+#
+
+find_path(OSS_INCLUDE_DIR
+          NAMES sys/soundcard.h
+          DOC "The OSS include directory"
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(OSS  REQUIRED_VARS OSS_INCLUDE_DIR)
+
+if(OSS_FOUND)
+    set(OSS_INCLUDE_DIRS ${OSS_INCLUDE_DIR})
+endif()
+
+mark_as_advanced(OSS_INCLUDE_DIR)