gpg: Allow building with older libgpg-error.
* g10/mainproc.c (proc_encrypted): Use constant from logging.h
Because the log levels are enums I had to change there names in
libgpg-error to avoid clashes. Master uses the new names but 2.2
needs to stick to the old names.
- Fixes-commit: 825909e9cd5f344ece6c0b0ea3a9475df1d643de
- Signed-off-by: Werner Koch <firstname.lastname@example.org>