Update to fldigi 4.0.11

Version 4.0.11

2017-10-14 David Freese <w1hkj@bellsouth.net>

3302f0d: Text Capture
35387db: FreeBSD mod
6e94d54: Documentation update
e4abdbf: PSK filter
cd36a46: Audio Stream
5a9322f: printf cleanup
e8651ed: CW Multichannel
89b5207: QSY multi