purge: don't delete ignored files if --all is not specified

Enable to select encoding in hgrc web section This patch provides character encoding setting in each repository. After this patch, You can use multi encoding repositories with one mercurial server.

merge with main

hgk: Use $HG instead of hg (see 849f011dbf79)

hgeditor: Use $HG to run 'hg diff' (see 849f011dbf79)

Remember path to 'hg' executable and pass to external tools and hooks as $HG.

archive: remove spurious flag_bits setting This makes zip -T on resulting archives work. File permissions are still retained.

convert: sometimes git forgets the author

Merge with main

merge: fix small bug with a failed merge across a rename If $HGMERGE wasn't able to fix the conflicts, we wouldn't copy f to fd, and util.set_exec wouldn't find the file.