Remove stuff not applicable in F26+

The spec file in F25 is going to be quite different, so commits
cannot be cherry-picked from one branch to the other anyway, so
let's just maximally simplify the spec file.

libpst.spec

@@ -3,23 +3,13 @@ Name:               libpst
 Version:            0.6.71
 Release:            4%{?dist}
 License:            GPLv2+
-Group:              Applications/Productivity
 Source:             http://www.five-ten-sg.com/%{name}/packages/%{name}-%{version}.tar.gz
-BuildRoot:          %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
 URL:                http://www.five-ten-sg.com/%{name}/
 Requires:           ImageMagick libgsf
 Requires:           %{name}-libs = %{version}-%{release}
 BuildRequires:      libtool
 BuildRequires:      ImageMagick gd-devel zlib-devel boost-devel libgsf-devel
-%if 0%{?fedora} > 25
 BuildRequires:      python2-devel
-%else
-BuildRequires:      python-devel
-%endif
-
-%{!?python_sitelib:  %global python_sitelib  %(%{__python} -c "from distutils.sysconfig import get_python_lib; print get_python_lib()")}
-%{!?python_sitearch: %global python_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print get_python_lib(1)")}
-
 
 %description
 The Libpst utilities include readpst which can convert email messages
@@ -31,46 +21,23 @@ Summation.
 
 %package libs
 Summary:            Shared library used by the pst utilities
-Group:              Development/Libraries
 
 %description libs
 The libpst-libs package contains the shared library used by the pst
 utilities.
 
 
-%if 0%{?fedora} > 25
 %package python2
-Requires:           python2
-%else
-%package python
-Requires:           python
-%endif
 Summary:            Python bindings for libpst
-Group:              Development/Libraries
 Requires:           %{name}-libs = %{version}-%{release}
 
-%if 0%{?fedora} >= 20
-%global __provides_exclude_from %{?__provides_exclude_from:%__provides_exclude_from|}^%{python_sitearch}/_.*\.so$
-%else
-%{?filter_setup:
-%filter_provides_in %{python_sitearch}/_.*\.so$
-%filter_setup
-}
-%endif
-
-
-%if 0%{?fedora} > 25
 %description python2
-%else
-%description python
-%endif
 The libpst-python package allows you to use the libpst shared object
 from python code.
 
 
 %package devel
 Summary:            Library links and header files for libpst application development
-Group:              Development/Libraries
 Requires:           pkgconfig
 Requires:           %{name}-libs = %{version}-%{release}
 
@@ -83,7 +50,6 @@ utilities.
 
 %package devel-doc
 Summary:            Documentation for libpst.so for libpst application development
-Group:              Documentation
 Requires:           %{name}-doc = %{version}-%{release}
 
 %description devel-doc
@@ -93,7 +59,6 @@ documentation for the libpst.so shared library.
 
 %package doc
 Summary:            Documentation for the pst utilities in html format
-Group:              Documentation
 
 %description doc
 The libpst-doc package contains the html documentation for the pst
@@ -109,69 +74,49 @@ libpst utilities.
 %build
 autoreconf -v -f -i
 %configure --enable-libpst-shared
-make %{?_smp_mflags}
+%make_build
 
 
 %install
-rm -rf $RPM_BUILD_ROOT
+%make_install
-make DESTDIR=$RPM_BUILD_ROOT install
 rm $RPM_BUILD_ROOT%{_libdir}/libpst.la
 rm $RPM_BUILD_ROOT%{_libdir}/libpst.a
 mv $RPM_BUILD_ROOT%{_datadir}/doc/%{name}-%{version} $RPM_BUILD_ROOT%{_datadir}/doc/%{name}
 
 
-%clean
-rm -rf $RPM_BUILD_ROOT
-
-
 %post libs -p /sbin/ldconfig
 
-
 %postun libs -p /sbin/ldconfig
 
 
 %files
-%defattr(-,root,root,-)
 %{_bindir}/*
 %{_mandir}/man1/*
 %{_mandir}/man5/*
 
 
 %files libs
-%defattr(-,root,root,-)
 %{_libdir}/libpst.so.*
 %doc COPYING
 
 
-%if 0%{?fedora} > 25
 %files python2
-%defattr(-,root,root,-)
 %{python2_sitearch}/_*.so
 %exclude %{python2_sitearch}/*.a
 %exclude %{python2_sitearch}/*.la
-%else
-%files python
-%defattr(-,root,root,-)
-%{python_sitearch}/_*.so
-%exclude %{python_sitearch}/*.a
-%exclude %{python_sitearch}/*.la
-%endif
 
 
 %files devel
-%defattr(-,root,root,-)
 %{_libdir}/libpst.so
 %{_includedir}/%{name}-4/
 %{_libdir}/pkgconfig/libpst.pc
 
 
 %files devel-doc
-%defattr(-,root,root,-)
 %{_datadir}/doc/%{name}/devel/
 
 
 %files doc
-%defattr(-,root,root,-)
 %dir %{_datadir}/doc/%{name}/
 %{_datadir}/doc/%{name}/*.html
 %{_datadir}/doc/%{name}/AUTHORS