Update to 2.1.2
remove clogf now that we have clogf in libm

• partial release notes from upstream

Copyright 2001 - 2019 by Joe Taylor, K1JT.

		   Release: WSJT-X 2.1.1
		     November 25, 2019
		   ---------------------

WSJT-X 2.1.1 is a bug fix only release addressing regressions in the
prior v2.1.0 release.

• Document rules for the UDP message protocol.
• Fix bug that could cause display of a blank Settings window.
• Fix message parsing to properly handle 4-character directed CQs
• Fix a potential crash in the interface to Omni-Rig.
• Improve handling of unexpected rig off line status changes from Omni-Rig.
• Add an option to highlight unworked 2-character grid fields rather than 4-character grid squares.
• Fix bug that caused unwanted disabling of "Enable Tx" in Fox mode.
• Log duplicate contacts in FT8 DXpedition Fox mode.
• Regenerate the GFSK Tx waveform if Tx audio frequency is changed.
• Fix the behavior of double-clicking on a decoded message with first callsign displayed as an unresolved hash code <...>.
• Fix a problem with determining "worked before" status after a band change.
• Updates to the WSJT-X 2.1 User Guide.
• Fix a production issue with the macOS tool chain that generated broken executables.

		   Release: WSJT-X 2.1
		      July 15, 2019
		   -------------------

WSJT-X 2.1 is a major update that introduces FT4, a new protocol
targeted at HF contesting. Other improvements have been made in the
following areas:

• FT8 waveform generated with GMSK, fully backward compatible
• user options for waterfall and spectrum display
• contest logging
• rig control
• user interface
• UDP messaging for inter-program communication
• accessibility

There are numerous minor enhancements and bug fixes.

We now provide a separate installation package for 64-bit Windows 7
and later, with significant improvements in decoding speed.