irc/epic4: Update to 2.10.11

• Converts to DISTVERSION
• Syncs MASTER_SITES with irc/epic5
• Strips binaries
• Includes upstream patches to minimize build warnings

ChangeLog:

From the KNOWNBUGS file:

• Quality of life improvements...
• - Reduce compiler warnings with modern gcc/clangs
• - Include patch from https://sources.debian.org/patches/epic4/1:2.10.10-1/man.patch/
• - Include patch from https://sources.debian.org/patches/epic4/1:2.10.10-1/status_mschulze.patch/
• (I reviewed all of the debian patches - some of them are debian-specific customizations)
• - Include patch from https://src.fedoraproject.org/rpms/epic/blob/rawhide/f/epic4-2.10.10-c99.patch
• - Include patch from https://src.fedoraproject.org/rpms/epic/blob/rawhide/f/epic4-2.10.1-sighandling.patch
• EPIC4-2.10.11 released here (Recrudescence) (commit 793)

PR: 278102