gpgrt-1.46
build: Document how to use git send-email.
build: Fix installation of gpg-error-config.1.
doc: Add a description for GPG_ERR_USE_CONDITIONS.
doc: Update gpgrt.texi for old gpg-error-config script.
doc: Add a man page for gpg-error-config.
Convert http links to https where possible in the source.
yat2m: Use __noreturn__ attribute.