dev
fix copyright years
implement history id command
remove unused functions
add --qf option for Repoquery
sync with stable-3.6 which has all changes from dev, but in different order, to prevent future conflicts
check for valid reponame when using setopt
Fix plugin related issues
Harden TDNF build by enforcing various GCC build flags
make sslcacert, sslclientkey, sslclientcert gloabl settings