bitbake: bb: Use namedtuple for Task data

Task dependency data is becoming unwieldy with the number of indices it
contains. Convert it to use a named tuple instead, which allows members
to be indexed by a named property or an index (which allows it to retain
backward compatibility).

(Bitbake rev: 26446cca4d22734c3f1b328a205c169dadb7e494)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/__init__.py

@@ -36,6 +36,7 @@ class BBHandledException(Exception):
 
 import os
 import logging
+from collections import namedtuple
 
 
 class NullHandler(logging.Handler):
@@ -227,3 +228,14 @@ def deprecate_import(current, modulename, fromlist, renames = None):
 
         setattr(sys.modules[current], newname, newobj)
 
+TaskData = namedtuple("TaskData", [
+    "pn",
+    "taskname",
+    "fn",
+    "deps",
+    "provides",
+    "taskhash",
+    "unihash",
+    "hashfn",
+    "taskhash_deps",
+])