Initial C++ runtime work. Much more to do.

include/stdlib.h

@@ -0,0 +1,33 @@
+#include <stddef.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include <sys/libkern.h>
+#include <sys/malloc.h>
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef __cplusplus
+namespace cxxruntime
+{
+
+	extern void *malloc( std::size_t );
+	extern void *realloc(void *, std::size_t);
+	extern void free(void *);
+}
+#define __extern_c extern "C"
+#else
+#define __extern_c extern
+#endif
+
+__extern_c void *cxxruntime_malloc(size_t);
+
+__extern_c void *cxxruntime_realloc(void *, size_t);
+__extern_c void cxxruntime_free(void *);
+
+__extern_c char *cxxruntime_strdup(const char *);
+__extern_c void abort() __attribute__(( __noreturn__ ));