tests: use grep -E instead of obsolescent egrep Testing on Fedora 38 failed with: egrep: warning: egrep is obsolescent; using grep -E The warning comes from https://git.savannah.gnu.org/cgit/grep.git/commit/?id=a9515624709865d480e3142fd959bccd1c9372d1 . For further anecdotal evidence of the change, see https://www.phoronix.com/news/GNU-Grep-3.8-Stop-egrep-fgrep . This reverses the code check that goes back to e7d3b509af8b. grep -E is POSIX, but there is a risk that it doesn't work the same on all platforms - especially older Unix versions. It should however always be possible to put a GNU grep in $PATH before running the tests.

dirstate: avoid leaking disk space in `hg debugrebuilddirstate` Before this MR running `hg debugrebuilddirstate` simply grows the dirstate without bound, never shrinking it, because the unused bytes counter stays low, even though the entirety of the file becomes unused.

dirstate-v2: actually fix the dirstate-v2 upgrade race It looks like the previous fix for the dirstate-v2 upgrade race didn't work. The problem is that it only recovers in case the size of the v1 `dirstate` file is smaller than the `v2` one, whereas in real life it's always larger. This commit changes the test to be more realistic, which reveals the crash, and changes the code to fix the crash.

Added signature for changeset bb42988c7e15

Added tag 6.5rc0 for changeset bb42988c7e15

relnotes: add 6.5rc0

branching: merge default into stable for 6.5rc0

branching: merge stable into default

Added signature for changeset 271a4ab29605

Added tag 6.4.5 for changeset 271a4ab29605