Move resolve_tilde and get_config_path into libi3

i3-config-wizard/main.c

@@ -461,38 +461,6 @@ void errorlog(char *fmt, ...) {
 void debuglog(char *fmt, ...) {
 }
 
-/*
- * This function resolves ~ in pathnames.
- * It may resolve wildcards in the first part of the path, but if no match
- * or multiple matches are found, it just returns a copy of path as given.
- *
- */
-static char *resolve_tilde(const char *path) {
-    static glob_t globbuf;
-    char *head, *tail, *result;
-
-    tail = strchr(path, '/');
-    head = strndup(path, tail ? (size_t)(tail - path) : strlen(path));
-
-    int res = glob(head, GLOB_TILDE, NULL, &globbuf);
-    free(head);
-    /* no match, or many wildcard matches are bad */
-    if (res == GLOB_NOMATCH || globbuf.gl_pathc != 1)
-        result = strdup(path);
-    else if (res != 0) {
-        err(1, "glob() failed");
-    } else {
-        head = globbuf.gl_pathv[0];
-        result = calloc(1, strlen(head) + (tail ? strlen(tail) : 0) + 1);
-        strncpy(result, head, strlen(head));
-        if (tail)
-            strncat(result, tail, strlen(tail));
-    }
-    globfree(&globbuf);
-
-    return result;
-}
-
 /*
  * Handles expose events, that is, draws the window contents.
  *