Add common IPC errors.

Signed-off-by: Angus Salkeld <asalkeld@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>

man/ipc_common.sh.errors

@@ -1,3 +1,25 @@
 .PP
-Common errors go here
 
+.B CS_ERR_TRY_AGAIN
+Resource temporarily unavailable
+
+.B CS_ERR_INVALID_PARAM
+Invalid argument
+
+.B CS_ERR_ACCESS
+Permission denied
+
+.B CS_ERR_LIBRARY
+The connection failed
+
+.B CS_ERR_INTERRUPT
+System call inturrupted by a signal
+
+.B CS_ERR_NOT_SUPPORTED
+The requested protocol/functuality not supported
+
+.B CS_ERR_MESSAGE_ERROR
+Incorrect auth message received
+
+.B CS_ERR_NO_MEMORY
+Not enough memory to completed the requested task