- No longer build mephis support: Drop memphis-devel BuildRequires,
memphis upstream is dead and gone from the web for several years.
libchamplain upstream have disabled mephis support in git 5 years
ago, so we should not build it either. Pass --disable-memphis to
configure to be ensure we do not.
- Pkgconfigify spec, align with what configure checks for:
+ Drop clutter-devel, clutter-gtk-devel, gtk3-devel,
libsoup-devel, sqlite3-devel and vala BuildRequires.
+ Add pkgconfig, pkgconfig(cairo), pkgconfig(clutter-1.0),
pkgconfig(clutter-gtk-1.0), pkgconfig(gdk-3.0),
pkgconfig(gio-2.0), pkgconfig(glib-2.0),
pkgconfig(gobject-2.0), pkgconfig(gtk+-3.0),
pkgconfig(libsoup-2.4), pkgconfig(sqlite3) and
pkgconfig(vapigen) BuildRequires.