feat:replace boost library with C++11 std library

third_party/apr/apr-1.6.5/test/proc_child.c

@@ -0,0 +1,21 @@
+#include "apr.h"
+#include <stdio.h>
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_IO_H
+#include <io.h>
+#endif
+#include <stdlib.h>
+
+int main(void)
+{
+    char buf[256];
+    int bytes;
+    
+    bytes = (int)read(STDIN_FILENO, buf, 256);
+    if (bytes > 0)
+        write(STDOUT_FILENO, buf, (unsigned int)bytes);
+
+    return 0; /* just to keep the compiler happy */
+}