MesaLib: update to 10.2.3.
Merge pull request #464 from chneukirchen/chris2

45 new templates
stunnel: fixed cross build.
get-flash-videos-git: needs perl to install.
get-flash-videos-git: declare rdeps as bdeps to build them.
perl-Test-Warn: needs perl-Tree-DAG_Node as bdep too.
perl-WWW-Mechanize: require a newer perl-Test-Warn version to build prereqs.
perl-Tree-DAG_Node: require perl-File-Slurp-Tiny as bdep too.
perl-Test-Warn: require a newer perl-Tree-DAG_Node as prereq too.
perl-LWP-Protocol-https: require rdeps as bdeps to build prereqs.
get-flash-videos-git: require a newer perl-LWP-Protocol-https to build all prereqs.
perl-LWP-Protocol-socks: require rdeps as bdeps to build prereqs.
get-flash-videos-git: require a newer perl-LWP-Protocol-socks to build all prereqs.
simple-mtpfs: remove unused host bdep.
offlineimap: remove python_versions; set to 2.7 by default.
xtrlock: indentation to force autobuilds.
sysstat: also install systemd services.
easytag: indentation to force autobuilds.
gnubg: improve short_desc to force autobuilds.
fvwm: improve short_desc to force autobuilds.