Ayke van Laethem 5c9e5618e0 py/gc: Rename gc_drain_stack to gc_mark_subtree and pass it first block.
This saves a bit in code size:

minimal CROSS=1: -44
unix:            -96
2018-02-19 16:00:59 +11:00
..
2017-07-18 11:57:39 +10:00
2017-07-18 11:57:39 +10:00
2017-07-18 11:57:39 +10:00