Added test for linnuxaudiodev module; directly adapted from sunaudiodev

test.  Someone with more Linux audio knowledge should at least take a
brief look at it.

Lib/test/output/test_linuxaudiodev

+test_linuxaudiodev

Lib/test/test_linuxaudiodev.py

+from test_support import verbose, findfile, TestFailed
+import linuxaudiodev
+import os
+
+def play_sound_file(path):
+    fp = open(path, 'r')
+    data = fp.read()
+    fp.close()
+    try:
+        a = linuxaudiodev.open('w')
+    except linuxaudiodev.error, msg:
+        raise TestFailed, msg
+    else:
+        a.write(data)
+        a.close()
+
+def test():
+    play_sound_file(findfile('audiotest.au'))
+
+test()