patch 8.2.4650: "import autoload" only works with using 'runtimepath'
Problem: "import autoload" only works with using 'runtimepath'.
Solution: Also support a relative and absolute file name.
diff --git a/src/vim.h b/src/vim.h
index d9bd51b..bff49be 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1571,6 +1571,9 @@
*/
#define MAXMAPLEN 50
+// maximum length of a function name, including SID and NUL
+#define MAX_FUNC_NAME_LEN 200
+
// Size in bytes of the hash used in the undo file.
#define UNDO_HASH_SIZE 32