gpg: Refactor key checking and fixing.
* g10/Makefile.am (gpg_sources): Add new files. * g10/gpgcompose.c (keyedit_print_one_sig): New stub. * g10/keyedit.c (sig_comparison): Move to new module. (check_all_keysigs): Likewise. (fix_keyblock): Adapt callsite. (keyedit_menu): Likewise. * g10/key-check.c: New file. * g10/key-check.h: Likewise.
- GnuPG-bug-id: T2236
- Signed-off-by: Justus Winter <justus@g10code.com>