Update scriplet dealing with symlinks as Gudelines suggests

mariadb-connector-c.spec

@@ -1,6 +1,6 @@
 Name:           mariadb-connector-c
 Version:        3.0.2
-Release:        12%{?dist}
+Release:        13%{?dist}
 Summary:        The MariaDB Native Client library (C driver)
 Group:          Applications/Databases
 License:        LGPLv2+
@@ -107,13 +107,18 @@ ln -s mariadb_version.h %{buildroot}%{_includedir}/mysql/mysql_version.h
 
 
 
-%pre devel
-if [ -h %{_libdir}/mariadb ]; then
-  unlink %{_libdir}/mariadb
-fi
-if [ -h %{_libdir}/mysql ]; then
-  unlink %{_libdir}/mysql
-fi
+# https://fedoraproject.org/wiki/Packaging:Directory_Replacement
+%pretrans -p <lua> devel
+path = "%{_libdir}/mariadb"
+st = posix.stat(path)
+if st and st.type == "link" then
+  os.remove(path)
+end
+path = "%{_libdir}/mysql"
+st = posix.stat(path)
+if st and st.type == "link" then
+  os.remove(path)
+end
 
 %post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
@@ -160,6 +165,10 @@ fi
 #   https://jira.mariadb.org/browse/MDEV-13836
 
 %changelog
+* Mon Oct 30 2017 Michal Schorm <mschorm@redhat.com> - 3.0.2-13
+- Update scriplet dealing with symlinks as Gudelines suggests
+  Related: #1501933
+
 * Thu Oct 26 2017 Michal Schorm <mschorm@redhat.com> - 3.0.2-12
 - Move library directly to libdir, don't create any symlinks to directories
 - Update scritplets, so they only check for old symlinks to directories