Update scriptlets and requirements

Since Fedora 28, ldconfig is automatically run as a file trigger, so
it is no longer necessary to call it from package scriptlets
(cf. https://fedoraproject.org/wiki/Changes/Removing_ldconfig_scriptlets).

Also, in commit 89aa83ab30, "PreReq:
freetype" was replaced with "Requires(pre): freetype".  While this is
effectively the same, the latter suggests that a "%pre" scriptlet
exists that needs freetype to run.  As fontconfig does not have a
"%pre" scriptlet, this change replaces it again with a "PreReq" tag.

fontconfig.spec

@@ -5,7 +5,7 @@
 Summary:	Font configuration and customization library
 Name:		fontconfig
 Version:	2.13.91
-Release:	1%{?dist}
+Release:	2%{?dist}
 # src/ftglue.[ch] is in Public Domain
 # src/fccache.c contains Public Domain code
 # fc-case/CaseFolding.txt is in the UCD
@@ -28,9 +28,8 @@ BuildRequires:	autoconf automake libtool gettext
 BuildRequires:	gperf
 
 Requires:	fontpackages-filesystem freetype
-Requires(pre):	freetype >= 2.9.1-6
+PreReq:		freetype >= 2.9.1-6
 Requires(post):	grep coreutils
-Requires(postun):	/sbin/ldconfig
 Requires:	font(:lang=en)
 Suggests:	font(dejavusans)
 
@@ -104,8 +103,6 @@ cat %{name}-conf.lang >> %{name}.lang
 make check
 
 %post
-%{?ldconfig}
-
 umask 0022
 
 mkdir -p /usr/lib/fontconfig/cache
@@ -120,8 +117,6 @@ if [ -x /usr/bin/fc-cache ] && /usr/bin/fc-cache --version 2>&1 | grep -q %{vers
   HOME=/root /usr/bin/fc-cache -f
 fi
 
-%ldconfig_postun
-
 %transfiletriggerin -- /usr/share/fonts /usr/share/X11/fonts/Type1 /usr/share/X11/fonts/TTF /usr/local/share/fonts
 HOME=/root /usr/bin/fc-cache -s
 
@@ -165,6 +160,10 @@ HOME=/root /usr/bin/fc-cache -s
 %doc fontconfig-devel.txt fontconfig-devel
 
 %changelog
+* Sun Jun 16 2019 Tim Landscheidt <tim@tim-landscheidt.de> - 2.13.91-2
+- Remove calls to ldconfig from scriptlets
+- Use "PreReq" instead of "Requires(pre)" for freetype
+
 * Mon Jun 10 2019 Akira TAGOH <tagoh@redhat.com> - 2.13.91-1
 - New upstream release.