act_wiz.c: update do_sockets to translate minutes/hours in online time

[gastamper]

Enhancement due to change in #64, currently time online is always shown in minutes without a unit; should add logic to append 'm' or 'h' as appropriate.

groundzero2/src/ground0.h

Line 1168 in 2f1e8cb

#define MINUTES_PLAYED(ch) (((current_time - (ch)->logon) / 60))

groundzero2/src/act_wiz.c

Line 3145 in 2f1e8cb

(!who ? (long)0 : MINUTES_PLAYED(who)), d->host);