Bug in shared.pri preventing compilation at JCNS

shared.pri

@@ -82,7 +82,7 @@ isEqual(env_jcns_variable, "yes") {
 CONFIG(BORNAGAIN_JCNS) {
   message("Special config for JCNS")
   INCLUDEPATH += /usr/users/jcns/pospelov/software/include
-  LIBS = -L/usr/users/jcns/pospelov/software/lib -L/usr/local/lib -L/usr/lib64 \
+  LIBS += -L/usr/users/jcns/pospelov/software/lib -L/usr/local/lib -L/usr/lib64 \
          -lgsl -lgslcblas -lfftw3 -lboost_program_options -lboost_iostreams \
          -lboost_system -lboost_signals  -lboost_filesystem -lboost_regex \
          -lboost_thread