Fix an issue in epel7

Delete dpkg-perl-libexecdir.patch
and other clean ups

dpkg-perl-libexecdir.patch

@@ -1,20 +0,0 @@
---- ./scripts/Makefile.am.orig	2015-04-09 23:09:22.000000000 +0100
-+++ ./scripts/Makefile.am	2015-07-02 02:45:12.844920000 +0100
-@@ -21,7 +21,7 @@ bin_SCRIPTS = \
- 	dpkg-source \
- 	dpkg-vendor
- 
--changelogdir = $(pkglibdir)/parsechangelog
-+changelogdir = $(pkglibexecdir)/parsechangelog
- changelog_SCRIPTS = \
- 	changelog/debian
- 
-@@ -123,7 +123,7 @@ do_perl_subst = $(AM_V_GEN) \
- 		sed -e "s:^\#![[:space:]]*/usr/bin/perl:\#!$(PERL):" \
- 		    -e "s:\$$CONFDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$CONFDIR='$(pkgconfdir)':" \
- 		    -e "s:\$$ADMINDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$ADMINDIR='$(admindir)':" \
--		    -e "s:\$$LIBDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$LIBDIR='$(pkglibdir)':" \
-+		    -e "s:\$$LIBDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$LIBDIR='$(pkglibexecdir)':" \
- 		    -e "s:\$$DATADIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$DATADIR='$(pkgdatadir)':" \
- 		    -e "s:\$$PROGVERSION[[:space:]]*=[[:space:]]*['\"][^'\"]*[\"']:\$$PROGVERSION='$(PACKAGE_VERSION)':"
- 

dpkg.spec

@@ -15,7 +15,6 @@ Group:          System Environment/Base
 License:        GPLv2 and GPLv2+ and LGPLv2+ and Public Domain and BSD
 URL:            https://tracker.debian.org/pkg/dpkg
 Source0:        http://ftp.debian.org/debian/pool/main/d/dpkg/%{name}_%{version}.tar.xz
-Patch0:         dpkg-perl-libexecdir.patch
 Patch1:         dpkg-fix-logrotate.patch
 Patch2:         dpkg-perl-libexecdir.epel6.patch
 BuildRequires:  zlib-devel bzip2-devel libselinux-devel gettext ncurses-devel
@@ -149,12 +148,10 @@ user interfaces.
 
 %prep
 %setup -q
-#patch0 -p1
 %patch1 -p1
 %if 0%{?rhel} && 0%{?rhel} < 7
 %patch2 -p1
 %endif
-
 # Filter unwanted Requires:
 cat << \EOF > %{name}-req
 #!/bin/sh
@@ -165,6 +162,11 @@ EOF
 %define __perl_requires %{_builddir}/%{name}-%{version}/%{name}-req
 chmod +x %{__perl_requires}
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1510214
+# crapy /usr/lib/rpm/perl.req in EL7
+# mark string "use --format" as requires perl(--format)
+sed -i 's/^use --/may use --/' scripts/dpkg-source.pl
+
 %build
 %if 0%{?fedora} || 0%{?rhel} > 6
 # We can't run autoreconf on epel <= 6 because needs gettext-0.18 when epel6
@@ -184,11 +186,11 @@ autoreconf
 
 # todo add this
 #--with-devlibdir=\$${prefix}/lib/$(DEB_HOST_MULTIARCH) \
-make %{?_smp_mflags}
+%make_build
 
 
 %install
-make install DESTDIR=%{buildroot}
+%make_install
 
 mkdir -p %{buildroot}/%{pkgconfdir}/origins