Log Message:
notmuch{,-emacs}: Update to 0.38

Changelog:
Notmuch 0.38 (2023-09-12)
# General

Support relative lastmod queries (see notmuch-sexp-queries(7) and \ 
notmuch-search-terms(7) for details).

Support indexing of designated attachments as text (see notmuch-config(1) for \ 
details).

# CLI

Add options --offset and --limit to notmuch-show(1).

# Emacs

New commands notmuch-search-edit-search and notmuch-tree-edit-search.

Introduce notmuch-tree-outline-mode.

Some compatibility fixes for Emacs 29. At least one issue (hiding images) \ 
remains in 0.38.

Support completion when piping to external command.

Fix regression in updating tag display introduced by 0.37.

# Library

Fix bug creating database when database.path is not set.

Incremental performance improvements for message deletion.

Catch Xapian exceptions when deleting messages.

Sync removed message properties to the database.

Replace use of thread-unsafe Query::MatchAll in the infix query parser.

# Notmuch-Mutt

Be more careful when clearing the results directory.

# Ruby

Use database_open_with_config, and provide compatible path search semantics.
Bugfix for query.get_sort

# Test Suite

Support testing installed version of notmuch.

Adapt to some breaking changes in glib handling of init files.

Replace OpenPGP key used in test suite.

# Performance Tests

Update signatures for performance test corpus.