For now use /tools/quartus/check_ipx_content only for quartus 15.0, because...

For now use /tools/quartus/check_ipx_content only for quartus 15.0, because the dir path for 11.1sp2 is 11.1 and thus does not fit.

tools/quartus/set_quartus

@@ -66,12 +66,12 @@ else # default site
     . ${RADIOHDL}/tools/quartus/quartus_version.sh 11.1
   elif [ "${TOOLSET}" = "unb2" ]; then
     . ${RADIOHDL}/tools/quartus/quartus_version.sh 15.0
+    # chech that ipx file is correctly setup
+    ${RADIOHDL}/tools/quartus/check_ipx_content
   else
     echo "error: unknown tool setting: ${TOOLSET} (choose 'unb1' or 'unb2')"
     exit 1
   fi
-  # chech that ipx file is correctly setup
-  ${RADIOHDL}/tools/quartus/check_ipx_content
 fi
 
 # Tool settings