More OpenBSD cleanup (primarily string).

This patch removes the string/ and wchar/ directories.

Change-Id: Ia489904bc67047e4bc79acb1f3eec21aa3fe5f0d
diff --git a/libc/bionic/__memcmp16.cpp b/libc/bionic/__memcmp16.cpp
new file mode 100644
index 0000000..bee0df1
--- /dev/null
+++ b/libc/bionic/__memcmp16.cpp
@@ -0,0 +1,44 @@
+/*
+Copyright (c) 2013 Intel Corporation
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+    * this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+    * this list of conditions and the following disclaimer in the documentation
+    * and/or other materials provided with the distribution.
+
+    * Neither the name of Intel Corporation nor the names of its contributors
+    * may be used to endorse or promote products derived from this software
+    * without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stddef.h>
+
+// Unoptimized version of __memcmp16.
+int __memcmp16(const unsigned short *ptr1, const unsigned short *ptr2, size_t n) {
+
+  for (size_t i = 0; i < n; i++) {
+    if (*ptr1 != *ptr2) {
+      return *ptr1 - *ptr2;
+    }
+    ptr1++;
+    ptr2++;
+  }
+  return 0;
+}