release check: a session helper may be extracted to another runtime path

droiddeck-steam-taskset (#570) goes to usr/local/libexec/droiddeck-steam/taskset, where PATH puts
it in front of Steam's own taskset for the client only; 0.5.0's check wanted every droiddeck-*
helper at its own path.

tools/release/check_session_assets.py

@@ -11,7 +11,9 @@ SESSION_FILES = OVERLAY.parents[2] / 'app/src/main/java/com/droiddeck/launcher/s
 
 
 def check_extraction(overlay, source):
-    deployed = set(re.findall(r'"(usr/local/bin/droiddeck-[^"]+)"\s+to\s+"\1"', source))
+    # Extracted to its own path, or (like droiddeck-steam-taskset, which PATH puts in front of
+    # Steam's own taskset only for the client) to another path in the runtime.
+    deployed = set(re.findall(r'"(usr/local/bin/droiddeck-[^"]+)"\s+to\s+"usr/[^"]+"', source))
     return ['not extracted at session start: ' + path.relative_to(overlay).as_posix()
             for path in sorted((overlay / 'usr/local/bin').glob('droiddeck-*'))
             if path.relative_to(overlay).as_posix() not in deployed]