Compilation under openSUSE Tumbleweed

[rmathar]

There is at least one mandatory patch to compile skymaker-4.3.0
on openSUSE Tumbleweed:

• correct the static double gammln() to static double gammln(double xx)
  near line 49 of src/random.c .
  The default C-compiler does not like to see the same function
  announced with two different signatures.

Because the default configure mode is "with cfitsio", one needs
to add BuildRequires: cfitsio-devel in skymaker.spec

I'd also strongly recommend to change the str[88]
to str[MAXCHAR] in line 163 of imaout.c to avoid buffer
overflow with the strncpy later in the function.

The files in the wcs subdirectory have the same problem of using
old K&R style of coding as in astromatic/sextractor#77
It seems (?) one can just copy the files from the current
https://github.com/astromatic/sextractor/tree/master/src/wcs
over here to patch this, because the files are apparently just copies
of the old files of sextractor.