adding a file to compile a tapir shared library

Makefile

@@ -122,6 +122,7 @@ $(foreach bin,$(1),$(eval LDFLAGS-$(bin) += $(2)))
 endef
 
 include lib/Rules.mk
+include libtapir/Rules.mk
 include replication/common/Rules.mk
 include replication/vr/Rules.mk
 include replication/ir/Rules.mk

libtapir/Rules.mk

+d := $(dir $(lastword $(MAKEFILE_LIST)))
+
+$(d)libtapir.so: $(patsubst %.o,%-pic.o, $(OBJS-or-client) $(OBJS-span-client) $(OBJS-qw-client))
+LDFLAGS-$(d)libtapir.so += -shared
+
+BINS += $(d)libtapir.so