[master] Set library version of libcfgclient

Asynchronous communictaion calls have been added

src/lib/config/Makefile.am

@@ -17,6 +17,8 @@ libcfgclient_la_SOURCES += module_spec.h module_spec.cc
 libcfgclient_la_SOURCES += ccsession.cc ccsession.h
 libcfgclient_la_SOURCES += config_log.h config_log.cc
 
+libcfgclient_la_LDFLAGS = -no-undefined -version-info 1:0:1
+
 nodist_libcfgclient_la_SOURCES  = config_messages.h config_messages.cc
 
 # The message file should be in the distribution.