Split evince-previewer into its own package

evince-previewer is used by the GTK printing dialog to preview
documents before printing. When Evince is distributed as a Flatpak
(for example in Silverblue), GTK can't find the previewer at
%{_bindir}/evince-previewer

See https://github.com/fedora-silverblue/issue-tracker/issues/122

Resolves: #1957679

(cherry picked from Fedora commit ce673efe3f95d8ee60499302f6698f9740df3747)

evince.spec

@@ -4,7 +4,7 @@
 
 Name:           evince
 Version:        40.1
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Document viewer
 
 License:        GPLv2+ and GPLv3+ and LGPLv2+ and MIT and Afmparse
@@ -51,6 +51,7 @@ BuildRequires:  pkgconfig(libgxps)
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 Requires: %{name}-thumbnailer%{?_isa} = %{version}-%{release}
+Requires: %{name}-previewer%{?_isa} = %{version}-%{release}
 
 %description
 Evince is simple multi-page document viewer. It can display and print
@@ -118,6 +119,14 @@ Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 %description thumbnailer
 This package brings the Evince thumbnailer independently from Evince.
 
+%package previewer
+Summary: Evince previewer
+Requires: %{name}-libs%{?_isa} = %{version}-%{release}
+
+%description previewer
+This package brings the Evince previewer independently from Evince.
+It provides the printing preview for the GTK printing dialog.
+
 %prep
 %autosetup -p1
 
@@ -246,7 +255,15 @@ desktop-file-validate $RPM_BUILD_ROOT%{_datadir}/applications/org.gnome.Evince-p
 %{_datadir}/thumbnailers/evince.thumbnailer
 %{_mandir}/man1/evince-thumbnailer.1*
 
+%files previewer
+%{_bindir}/evince-previewer
+%{_mandir}/man1/evince-previewer.1*
+
 %changelog
+* Tue May 04 2021 Felipe Borges <feborges@redhat.com> - 40.1-3
+- Split evince-previewer into its own package
+- See https://github.com/fedora-silverblue/issue-tracker/issues/122
+
 * Thu Apr 15 2021 Mohan Boddu <mboddu@redhat.com> - 40.1-2
 - Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937