Move cdbgang.c and cdbconn.c to dispatcher directory

src/backend/cdb/Makefile

@@ -18,7 +18,7 @@ SUBDIRS := motion dispatcher
 OBJS = cdbappendonlystorage.o cdbappendonlystorageformat.o \
        cdbappendonlystorageread.o cdbappendonlystoragewrite.o \
 	   cdbbackup.o cdbbufferedappend.o cdbbufferedread.o \
-	   cdbcat.o cdbcellbuf.o cdbconn.o cdbcopy.o \
+	   cdbcat.o cdbcellbuf.o cdbcopy.o \
 	   cdbdatabaseinfo.o cdbdirectopen.o \
 	   cdbdistributedsnapshot.o \
 	   cdbdistributedxid.o cdbdistributedxacts.o \
@@ -33,7 +33,7 @@ OBJS = cdbappendonlystorage.o cdbappendonlystorageformat.o \
 	   cdbfilerepresetpeerprocess.o \
 	   cdbfts.o \
 	   cdbglobalsequence.o \
-	   cdbgang.o cdbgroup.o \
+	   cdbgroup.o \
 	   cdbhash.o cdbheap.o \
 	   cdbllize.o cdblocaldistribxact.o \
 	   cdbmaxdistributedxid.o \

src/backend/cdb/dispatcher/Makefile

@@ -11,5 +11,5 @@ include $(top_builddir)/src/Makefile.global
 
 override CPPFLAGS += -I$(top_srcdir)/src/backend/gp_libpq_fe -I$(top_srcdir)/src/port -I$(top_srcdir)/src/backend/utils/misc
 
-OBJS = cdbdisp.o cdbdisp_thread.o cdbdispatchresult.o cdbdisp_dtx.o cdbdisp_query.o
+OBJS = cdbconn.o cdbdisp.o cdbdisp_thread.o cdbdispatchresult.o cdbdisp_dtx.o cdbdisp_query.o cdbgang.o
 include $(top_srcdir)/src/backend/common.mk