Switch to upstream parking_lot git, fix compilation on wasi

Author: coolreader18

Cargo.toml

@@ -69,4 +69,4 @@ opt-level = 3
 [patch.crates-io]
 # REDOX START, Uncommment when you want to compile/check with redoxer
 # REDOX END
-lock_api = { git = "https://github.com/coolreader18/parking_lot", branch = "remutex-is_owned" }
+lock_api = { git = "https://github.com/Amanieu/parking_lot" }

vm/src/stdlib/os.rs

@@ -309,7 +309,7 @@ mod _os {
         O_APPEND, O_CREAT, O_EXCL, O_RDONLY, O_RDWR, O_TRUNC, O_WRONLY, SEEK_CUR, SEEK_END,
         SEEK_SET,
     };
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(windows, target_os = "wasi")))]
     #[pyattr]
     use libc::{PRIO_PGRP, PRIO_PROCESS, PRIO_USER};
     #[cfg(any(target_os = "dragonfly", target_os = "freebsd", target_os = "linux"))]