DWDS/Dialing Concordance Code

unlink unix domain socket file on exit: https://sourceforge.net/p/ddc-concordance/tickets/13/

rename CHost::StopAcceptingThread to CHost::CloseListenSocket

rename CHost::Close to a separate CloseSocketWraper

delete redundant breaks https://sourceforge.net/p/ddc-concordance/tickets/12/

ignore breaks in the beginning of file https://sourceforge.net/p/ddc-concordance/tickets/11/

I think we've both already spent way more time on it than three bytes are worth; https://sourceforge.net/p/ddc-concordance/tickets/6/

ignore break numbers in the input tab format, https://sourceforge.net/p/ddc-concordance/tickets/5/

allow (ignore) leading blank line and and comments ("%%…") before first %%:meta.file_ https://sourceforge.net/p/ddc-concordance/tickets/3/

ignore dummy port in unix domain socket https://sourceforge.net/p/ddc-concordance/tickets/2/

+ integrated 'delwin' branch changes into trunk (via delwin-merge2)
- delwin r1179-1294
- delwin-merge r1295:1309
- delwin-merge2 r1313:1320