Move common http tool code to http_common

src/tools/aesgcm_download.h

@@ -43,6 +43,7 @@
 
 #include <sys/select.h>
 #include <curl/curl.h>
+#include "tools/http_common.h"
 #include "tools/http_download.h"
 
 #include "ui/win_types.h"
@@ -61,6 +62,4 @@ void* aesgcm_file_get(void* userdata);
 void aesgcm_download_cancel_processes(ProfWin* window);
 void aesgcm_download_add_download(AESGCMDownload* download);
 
-char* http_basename_from_url(const char* url);
-
 #endif