; Minor fixes in treesit.c

; Minor fixes in treesit.c

* src/treesit.c:
(treesit_initialized): Make static.
(treesit_find_override_name): Add check for XCAR (tail).
(Ftreesit_parser_set_included_ranges): Fix comment.

(treesit_recursion_limit): Change to a compile time
constant.
(treesit_symbol_to_c_name): Precompute the length.
(Ftreesit_pattern_expand): Use predefined symbols.
(treesit_cursor_helper)
(Ftreesit_search_subtree)
(Ftreesit_induce_sparse_tree): Update treesit_recursion_limit.
(syms_of_treesit): New symbols.