midx: trace2 regions and grab-bag patches

Here is a small handful of MIDX and MIDX bitmap-related patches that I've been carrying in GitHub's fork for a while now and forgot to send upstream.

The first is a small typofix, and the second is a legitimate bug fix which allows us to consider annotated tags as bitmap candidates during commit selection. The final two are trace2 regions and instrumentation that I've found helpful when rolling out MIDX bitmaps in a production setting.

Sorry that these are so disjointed in nature ;-). I figured that it was better to send a grab-bag series like this than to hold onto these patches forever!

Thanks in advance for your review.

Taylor Blau (4):
midx.c: fix whitespace typo
midx.c: consider annotated tags during bitmap selection midx.c: instrument MIDX and bitmap generation with trace2 regions pack-bitmap-write.c: instrument number of reused bitmaps

 midx.c                        | 34 +++++++++++++++++++++++++++++++++-
 pack-bitmap-write.c           |  8 +++++++-
 t/t5326-multi-pack-bitmaps.sh | 24 ++++++++++++++++++++++++
 3 files changed, 64 insertions(+), 2 deletions(-)

2.38.0.16.g393fd4c6db