Provide gzerr and friends as aliases to ignerr in ign-common3 and ign-common4

[azeey]

Desired behavior

Code in Citadel and Fortress can use gzerr and friends instead of ignerr and friends so we have less things to change during forward ports.

Alternatives considered

Implementation suggestion

in Console.hh

#define gzerr ignerr
#define gzwarn ignwarn
#define gzmsg ignmsg
...