Adds destination size to conc_... functions and switch to strlcpy/strlcat

Author: nbriggs

inc/dskdefs.h

@@ -19,8 +19,8 @@ LispPTR COM_writepage(LispPTR *args);
 LispPTR COM_truncatefile(LispPTR *args);
 LispPTR COM_changedir(LispPTR *args);
 LispPTR COM_getfreeblock(LispPTR *args);
-void conc_dir_and_name(char *dir, char *name, char *fname);
-void conc_name_and_version(char *name, char *ver, char *rname);
+void conc_dir_and_name(char *dir, char *name, char *fname, size_t fname_size);
+void conc_name_and_version(char *name, char *ver, char *rname, size_t rname_size);
 void separate_version(char *name, char *ver, int checkp);
 int unpack_filename(char *file, char *dir, char *name, char *ver, int checkp);
 int true_name(char *path);