ANN: New WCSLIB 7.7 released

New WCSLIB release found.

Version: 7.7 (2021/07/12)

WCSLIB version 7.7 (2021/07/12)

C library
- In disfree() and disset(), removed potential for double invokation of free() on allocated memory. Reported by Cyril Richard.
- In wcsutil_fptr2str(), fixed a bug reported by Ralf Palsa (with fix) that caused it to be overly enthusiastic in stripping leading zeroes off addresses of function pointers.
- In wcspcx(), replaced variable length arrays will allocated memory (portability issue). Reported by Mihai Cara with patch.
- Fixed buglets in wcsbth() and linsize() uncovered by gcc 11.1.0.
- Quelled inconsequential compiler warnings from gcc 11.1.0 concerning wcsmix() (function prototype in wcs.h), wcstrim(), wcseulexe(), wcsulex(), and wcsutrne().
- Defined _POSIX_C_SOURCE appropriately in tprj2.c and tspc.c to get the function prototype etc. for nanosleep() from time.h.
Fortran wrappers
- Quelled numerous inconsequential compiler warnings from gfortran 11.1.0.
- Fixed minor bugs uncovered by gfortran 11.1.0 in test programs tdis2 and ttab3.
Utilities
- Moved 'tofits' from ./C/test/ into the utilities directory as it's generally useful, and added usage (converted to man page).
Also made it a bit smarter in dealing with ISO/IEC 8859 and UTF-8 encoded byte streams, in particular translating non-breaking spaces into ordinary spaces.
Installation
- Two patches for configure.ac provided by Mos� Giordano:
  1. makes it possible to build the Windows library using the MinGW cross-compiler,
  2. makes the soname of the MacOSX library consistent with other Unix systems.