rename the statically linked strlcpy to strbcpy

stands for "string bounds copy". Some systems like macOS include their
very own version of strlcpy and testing for that would require some
bloat like gnu automake so I'm just gonna rename it to prevent any
future conflicts. I only test on Linux and OpenBSD anyway. ;)

lcl.c

@@ -9,9 +9,6 @@
 #include <unistd.h>
 #include <libgen.h>
 #include <errno.h>
-#ifdef __OpenBSD__
-#	include <string.h>
-#endif
 
 #include <lua.h>
 #include <lauxlib.h>
@@ -225,7 +222,7 @@ cl_options(lua_State *L)
 
 	/* parameter type checking */
 	luaL_checktype(L, 1, LUA_TTABLE);
-	strlcpy(optstring, luaL_checkstring(L, 2), lua_rawlen(L, 2) * sizeof(char *));
+	strbcpy(optstring, luaL_checkstring(L, 2), lua_rawlen(L, 2) * sizeof(char *));
 	luaL_checktype(L, 3, LUA_TFUNCTION);
 
 	argc = (int)lua_rawlen(L, 1) + 1; /* get argv length */