build: make use of 76 lib/*.h renamed files

76 private header files renamed to use our standard naming scheme.

This change affects 322 files in libcurl's source tree.

tests/libtest/lib568.c

@@ -30,7 +30,7 @@
 
 #include <curl/mprintf.h>
 
-#include "memdebug.h"
+#include "curl_memdebug.h"
 
 /* build request url */
 static char *suburl(const char *base, int i)