scratch/noverlay updated (13003105a8 -> 091e0f04ff)

[Stefan Monnier]

monnier pushed a change to branch scratch/noverlay.

      from  13003105a8 itree.c: Add new "stateless" iterator code and 
post-order traversal
       new  fb7f1864da itree.c: Make the iterator reentrant (bug#59183)
       new  091e0f04ff itree.c: Get rid of the old iterator code


Summary of changes:
 src/alloc.c  |   5 --
 src/buffer.c |  12 +--
 src/emacs.c  |   3 -
 src/eval.c   |   1 -
 src/itree.c  | 274 +++++------------------------------------------------------
 src/itree.h  |  54 ++++++------
 src/xdisp.c  |  10 +--
 7 files changed, 48 insertions(+), 311 deletions(-)