Fix python devel buildrequires for rhel

urjtag.spec

@@ -6,7 +6,7 @@
 
 Name:           urjtag
 Version:        2017.10
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        A tool for communicating over JTAG with flash chips and CPUs
 Group:          Development/Tools
 
@@ -31,7 +31,7 @@ BuildRequires:  swig
 BuildRequires: %{py2_prefix}-devel
 %if 0%{?with_python3}
 %if 0%{?rhel} || 0%{?centos}
-BuildRequires: %{py3_prefix}4-devel
+BuildRequires: python%{python3_pkgversion}-devel
 %else
 BuildRequires: %{py3_prefix}-devel
 %endif
@@ -150,6 +150,9 @@ pushd bindings/python/
 %endif
 
 %changelog
+* Fri Mar 08 2019 Troy Dawson <tdawson@redhat.com> - 2017.10-3
+- Rebuilt to change main python from 3.4 to 3.6
+
 * Thu Mar 22 2018 Jiri Kastner <jkastner@redhat.com> - 2017.10-2
 - revert back armfix patch