fixing xulrunner linux bustage

toolkit/xre/Makefile.in

@@ -131,6 +131,7 @@ SHARED_LIBRARY_LIBS += $(DIST)/lib/$(LIB_PREFIX)appleevents_s.$(LIB_SUFFIX)
 endif
 
 ifneq (,$(filter-out OS2 WINNT,$(OS_ARCH)))
+ifndef MOZ_ENABLE_LIBXUL
 STACKWALK_SRC_LCSRCS =               \
 		nsStackFrameUnix.cpp \
 		nsStackFrameUnix.h   \
@@ -138,6 +139,7 @@ STACKWALK_SRC_LCSRCS =               \
 
 STACKWALK_CPPSRCS := $(addprefix $(topsrcdir)/xpcom/base/, $(STACKWALK_SRC_LCSRCS))
 CPPSRCS           += nsStackFrameUnix.cpp
+endif
 SHAREDCPPSRCS	  += nsSigHandlers.cpp
 endif
 
@@ -145,9 +147,12 @@ GARBAGE += $(SHAREDSRCS) $(wildcard *.$(OBJ_SUFFIX))
 ifeq ($(OS_ARCH),WINNT)
 GARBAGE	+= $(addprefix $(srcdir)/,$(SHAREDSRCS))
 endif
+
 ifneq (,$(filter-out OS2 WINNT,$(OS_ARCH)))
+ifndef MOZ_ENABLE_LIBXUL
 GARBAGE += $(STACKWALK_SRC_LCSRCS)
 endif
+endif
 
 SHARED_LIBRARY_LIBS += ../profile/src/$(LIB_PREFIX)profile_s.$(LIB_SUFFIX)