Add MariaDB Connector/C as a built-in alternative (v3.2.3).

vendor/MDBC/cmake/CheckFunctions.cmake

@@ -0,0 +1,30 @@
+#
+#  Copyright (C) 2013-2016 MariaDB Corporation AB
+#
+#  Redistribution and use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the COPYING-CMAKE-SCRIPTS file.
+#
+
+# This file is included by CMakeLists.txt and
+# checks for various functions.
+# You will find the appropriate defines in 
+# include/my_config.h.in
+
+INCLUDE(CheckFunctionExists)
+
+CHECK_FUNCTION_EXISTS (alloca HAVE_ALLOCA)
+CHECK_FUNCTION_EXISTS (dlerror HAVE_DLERROR)
+CHECK_FUNCTION_EXISTS (dlopen HAVE_DLOPEN)
+CHECK_FUNCTION_EXISTS (fcntl HAVE_FCNTL)
+CHECK_FUNCTION_EXISTS (memcpy HAVE_MEMCPY)
+CHECK_FUNCTION_EXISTS (nl_langinfo HAVE_NL_LANGINFO)
+CHECK_FUNCTION_EXISTS (setlocale HAVE_SETLOCALE)
+CHECK_FUNCTION_EXISTS (poll HAVE_POLL)
+CHECK_FUNCTION_EXISTS (getpwuid HAVE_GETPWUID)
+
+IF(HAVE_FILE_UCONTEXT_H)
+  CHECK_FUNCTION_EXISTS (makecontext HAVE_UCONTEXT_H)
+ENDIF()
+
+CHECK_FUNCTION_EXISTS (cuserid HAVE_CUSERID)