Add Socket Libraries.

Add Posix functions for porting compatibility.
Fix compliance issues with ISO/IEC 9899:199409
New Functions:
  setenv(), fparseln(), GetFileNameFromPath(), rename(),
  realpath(), setprogname(), getprogname(), strlcat(), strlcpy(),
  strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(),
  mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(),
  writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(),
  bcopy(), 


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/PosixLib/Err/warn_err.c

@@ -0,0 +1,99 @@
+/** @file
+  Implement the warning and error output messages.
+
+  Copyright (c) 2011, Intel Corporation
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ * Copyright (c) 1994 Michael L. Hitch
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Michael L. Hitch.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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  <LibConfig.h>
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+static void
+_Vdomessage(int doerrno, const char *fmt, va_list args)
+{
+  fprintf(stderr, "%s: ", getprogname());
+  if (fmt) {
+    vfprintf(stderr, fmt, args);
+    fprintf(stderr, ": ");
+  }
+  if (doerrno && errno < EMAXERRORVAL) {
+    fprintf(stderr, "%s", strerror(errno));
+  }
+  fprintf(stderr, "\n");
+}
+
+void
+err(int eval, const char *fmt, ...)
+{
+  va_list ap;
+  va_start(ap, fmt);
+  _Vdomessage(1, fmt, ap);
+  va_end(ap);
+  exit(eval);
+}
+
+void
+errx(int eval, const char *fmt, ...)
+{
+  va_list ap;
+  va_start(ap, fmt);
+  _Vdomessage(0, fmt, ap);
+  va_end(ap);
+  exit(eval);
+}
+
+void
+warn(const char *fmt, ...)
+{
+  va_list ap;
+  va_start(ap, fmt);
+  _Vdomessage(1, fmt, ap);
+  va_end(ap);
+}
+
+void
+warnx(const char *fmt, ...)
+{
+  va_list ap;
+  va_start(ap, fmt);
+  _Vdomessage(0, fmt, ap);
+  va_end(ap);
+}