[sqwebmail] New releases of Courier packages

[Sam V. <mr...@co...>]

Download: https://www.courier-mta.org/download.html

New releases of Courier packages.

Changes:

- all: miscellaneous documentation updates

- courier-unicode: update to the Unicode 17 standard. This includes an  
soname bump.

- courier, maildrop: convert more code to use the new C++ MIME parsing  
library. reformime will now fail with a non-0 exit code if the input message  
has fatal MIME parsing errors, instead of using the GIGO approach.

- all: rpm and deb packaging improvements

- courier: update database building scripts (makeacceptmailfor,  
makehosteddomains, makealiases...) to be aware of configuration file backup  
copies created by rpm and deb package managers. The backup copies are either  
ignored or the scritp fails if manual intervention is required. Man pages  
updated with all the relevant details.

- cone: fix a problem with the "Show Full Headers" option with some back-end  
mailbox formats.