Enable support for syslog

Packages describing “syslog” as local USE flag

Package“syslog” Flag Description
net-analyzer/muninConfigure the node by default to log on syslog. This requires the presence of virtual/perl-Sys-Syslog. As of version 2.0.2, the master scripts only log to file, and not to syslog.
net-libs/libsrtpUse syslog for error messages

All packages providing a “syslog” USE flag (14)