[DLM] Consolidate transport protocols

This patch consolidates the TCP & SCTP protocols for the DLM into a single file
and makes it switchable at run-time (well, at least before the DLM actually
starts up!)

For RHEL5 this patch requires Neil Horman's patch that expands the in-kernel
socket API but that has already been twice ACKed so it should be OK.

The patch adds a new lowcomms.c file that replaces the existing lowcomms-sctp.c
& lowcomms-tcp.c files.

Signed-off-By: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/dlm/Makefile b/fs/dlm/Makefile
index 6538894..604cf7d 100644
--- a/fs/dlm/Makefile
+++ b/fs/dlm/Makefile
@@ -8,14 +8,12 @@
 				member.o \
 				memory.o \
 				midcomms.o \
+				lowcomms.o \
 				rcom.o \
 				recover.o \
 				recoverd.o \
 				requestqueue.o \
 				user.o \
-				util.o
+				util.o 
 dlm-$(CONFIG_DLM_DEBUG) +=	debug_fs.o
 
-dlm-$(CONFIG_DLM_TCP)   += lowcomms-tcp.o
-
-dlm-$(CONFIG_DLM_SCTP)  += lowcomms-sctp.o
\ No newline at end of file