- Fix wrong automatic pkgconfig(wcs) requires, add
0001-Reference-wcslib-by-correct-name-in-gnuastro.pc-pkgc.patch
- Drop ghostscript BuildRequires, only needed for running tests
(not done), the PDF exporter is built unconditionally. At runtime,
the exporter uses a "gs" executable in PATH, so add a Recommends.
- Add bcond for running tests, keep it disabled by default.
OBS-URL: https://build.opensuse.org/request/show/747230
OBS-URL: https://build.opensuse.org/package/show/science/gnuastro?expand=0&rev=7