libgpg-error-1.56
build: Document how to use git send-email.
doc: Add man page of gpgrt-config.
Time for a new error code; this time GPG_ERR_UNEXPECTED_PACKET
doc: Minor style fix.
doc: Add a man page for gpg-error-config.
Convert http links to https where possible in the source.
yat2m: Release the memory after the use.