Rename neteq4 folder to neteq

Keep the old neteq4/audio_decoder_unittests.isolate while waiting for
a hard-coded reference to change.

This CL effectively reverts r6257 "Rename neteq4 folder to neteq".

BUG=2996
TBR=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/21629004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6367 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/webrtc_tests.gypi b/webrtc/webrtc_tests.gypi
index a76126c..3c1dca6 100644
--- a/webrtc/webrtc_tests.gypi
+++ b/webrtc/webrtc_tests.gypi
@@ -75,7 +75,7 @@
       'target_name': 'webrtc_perf_tests',
       'type': '<(gtest_target_type)',
       'sources': [
-        'modules/audio_coding/neteq4/test/neteq_performance_unittest.cc',
+        'modules/audio_coding/neteq/test/neteq_performance_unittest.cc',
         'video/call_perf_tests.cc',
         'video/full_stack.cc',
         'video/rampup_tests.cc',