Cleanup spec.

bc.spec

@@ -1,10 +1,9 @@
 Summary: GNU's bc (a numeric processing language) and dc (a calculator)
 Name: bc
 Version: 1.07.1
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: GPLv2+
 URL: http://www.gnu.org/software/bc/
-Group: Applications/Engineering
 Source: http://ftp.gnu.org/gnu/bc/bc-%{version}.tar.gz
 Patch1: bc-1.06-dc_ibase.patch
 Patch2: bc-1.06.95-doc.patch
@@ -22,16 +21,14 @@ Install the bc package if you need its number handling capabilities or
 if you would like to use its text mode calculator.
 
 %prep
-%setup -q
-%patch1 -p1 -b .dc_ibase
-%patch2 -p1 -b .doc
+%autosetup -p1
 
 %build
 %configure --with-readline
-make
+%make_build
 
 %install
-make install DESTDIR=$RPM_BUILD_ROOT
+%make_install
 rm -f $RPM_BUILD_ROOT/%{_infodir}/dir
 
 %post
@@ -51,7 +48,6 @@ if [ $1 = 0 -a -e %{_infodir}/bc.info.gz -a -e %{_infodir}/dc.info.gz ]; then
 fi
 
 %files
-%defattr(-,root,root,-)
 %license COPYING COPYING.LIB
 %doc FAQ AUTHORS NEWS README Examples/
 %{_bindir}/dc
@@ -60,6 +56,9 @@ fi
 %{_infodir}/*
 
 %changelog
+* Wed Sep 13 2017 Vasiliy N. Glazov <vascom2@gmail.com> - 1.07.1-4
+- Cleanup spec
+
 * Wed Aug 02 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.07.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild