AI 145059: (Almost) final set of wrapper around the C headers for stdc++ and their tests.

The only one left is cstring.
  * bionic/libstdc++/include/cstdlib:
  * bionic/libstdc++/include/cstdio:
  * bionic/libstdc++/include/cstdint:
  * bionic/libstdc++/include/csignal:
  * bionic/libstdc++/include/csetjmp:
  Added header file.
  Checks the bionic headers file were picked up instead of the host ones.
  Added test for new header files
  * system/extras/tests/bionic/libstdc++/Android.mk:
  Added tests for the new header files.
  EXTRA_CFLAGS: include the bionic header files.
  BUG=1601432

Automated import of CL 145059

libstdc++/include/cstdlib

@@ -0,0 +1,108 @@
+/* -*- c++ -*- */
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ * 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.
+ *
+ * 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.
+ */
+
+#ifndef BIONIC_LIBSTDCPP_INCLUDE_CSTDLIB__
+#define BIONIC_LIBSTDCPP_INCLUDE_CSTDLIB__
+
+/*
+ * Standard C++ Library wrapper around the C stdlib.h header file.
+ */
+#include <stdlib.h>
+
+namespace std {
+
+using ::exit;
+using ::abort;
+using ::atexit;
+using ::on_exit;
+
+using ::getenv;
+using ::putenv;
+using ::setenv;
+using ::unsetenv;
+using ::clearenv;
+
+using ::mktemp;
+using ::mkstemp;
+
+using ::strtol;
+using ::strtoll;
+using ::strtoul;
+using ::strtoull;
+using ::strtod;
+using ::strtof;
+
+using ::atoi;
+using ::atol;
+using ::atoll;
+using ::atof;
+
+using ::abs;
+using ::labs;
+using ::llabs;
+
+using ::realpath;
+using ::system;
+
+using ::bsearch;
+using ::qsort;
+
+using ::jrand48;
+using ::mrand48;
+using ::nrand48;
+using ::lrand48;
+using ::seed48;
+using ::srand48;
+
+using ::rand;
+using ::srand;
+using ::random;
+using ::srandom;
+
+using ::unlockpt;
+using ::ptsname;
+using ::ptsname_r;
+using ::getpt;
+using ::grantpt;
+
+using ::div_t;
+using ::div;
+using ::ldiv_t;
+using ::ldiv;
+using ::lldiv_t;
+using ::lldiv;
+
+using ::mblen;
+using ::mbstowcs;
+using ::mbtowc;
+using ::wctomb;
+using ::wcstombs;
+}  // namespace std
+
+#endif  // BIONIC_LIBSTDCPP_INCLUDE_CSTDLIB__