Update to 4.2.3.

New Features in V4.2.3

• Warning about use of ancient gcc compiler
• New desktop/background images
• New AMI Function:SCCPShowRefcount
• Support for newer/future version of automake
• Small size reduction of chan_sccp.so

Bug Fixes

• Channel being left behind after hangup
• Scheduled Hangup / Schedule Digit Timeout
• Potential Deadlock Fallback Atomic Functions
• MWI loosing track of new voicemails under certain circumstances
• using gnu version of libiconv fixed
• gen_sccp_enum improved / gnu awk extension dependency removed
• set socket option should happen before binding to the socket
• channel monitor/record handling fixed
• Code cleanup / fixed memory leaks / fixed potential null pointer dereferences
• Some smaller patches (Check ChangeLog for details)
• Some minor BSD Compilation issues

PR: 207291
Submitted by: Diederik de Groot <ddegroot@talon.nl> (maintainer)