changes sherpa spec files for pyext , scons and swig to work

sherpa-toolfile.spec

@@ -30,6 +30,8 @@ cat << \EOF_TOOLFILE >%i/etc/scram.d/sherpa.xml
 <use name="fastjet"/>
 <use name="sqlite"/>
 <use name="openloops"/>
+<use name="scons"/>
+<use name="swig"/>
 </tool>
 EOF_TOOLFILE
 

sherpa.spec

@@ -3,7 +3,7 @@
 %define branch cms/v%realversion
 %define github_user cms-externals
 Source: git+https://github.com/%github_user/%{n}.git?obj=%{branch}/%{tag}&export=%{n}-%{realversion}&output=/%{n}-%{realversion}-%{tag}.tgz
-Requires: hepmc lhapdf blackhat sqlite fastjet openssl
+Requires: hepmc lhapdf blackhat sqlite fastjet openssl scons swig
 BuildRequires: mcfm
 
 %if "%(case %cmsplatf in (slc*) echo true ;; (*) echo false ;; esac)" == "true"
@@ -43,6 +43,7 @@ esac
             --enable-hepmc2=$HEPMC_ROOT \
             --enable-lhapdf=$LHAPDF_ROOT \
             --enable-blackhat=$BLACKHAT_ROOT \
+            --enable-pyext \
             ${OPENLOOPS_ROOT+--enable-openloops=$OPENLOOPS_ROOT}\
             --with-sqlite3=$SQLITE_ROOT \
             CXX="%cms_cxx" \
@@ -53,3 +54,14 @@ make %{makeprocesses}
 
 %install
 make install
+find %{i}/lib -name '*.la' -delete
+
+%post
+%{relocateConfig}lib/python2.7/site-packages/ufo_interface/sconstruct_template
+%{relocateConfig}bin/make2scons
+%{relocateConfig}share/SHERPA-MC/makelibs
+%{relocateConfig}bin/Sherpa-config
+%{relocateConfig}bin/Sherpa-generate-model
+%{relocateConfig}include/SHERPA-MC/ATOOLS/Org/CXXFLAGS.H
+
+