setting xerces version depending on the OS in dev4

git-svn-id: svn+ssh://svn.cern.ch/reps/lcgsoft/trunk/lcgcmake@7359 4525493e-7705-40b1-a816-d608a930855b

cmake/toolchain/heptools-dev4.cmake

@@ -123,7 +123,11 @@ if(NOT ${LCG_OS}${LCG_OSVERS} STREQUAL mac109 AND NOT LCG_TARGET MATCHES "icc" )
 endif()
 LCG_external_package(vectorclass       1.16                                     )
 LCG_external_package(vdt               0.3.6                                    )
+if(${LCG_OS}${LCG_OSVERS} STREQUAL cc7)
+LCG_external_package(XercesC           3.1.2         author=3.1.2               )
+else()
 LCG_external_package(XercesC           3.1.1p1        author=3.1.1              )
+endif()
 LCG_external_package(xqilla            2.2.4p1                                  )
 LCG_external_package(xrootd            3.3.6                                    )
 if(NOT ${LCG_OS} STREQUAL mac)