When reporting that a line is too long, include the line number in the error message.  While I'm here, add a note that the "line too long" message isn't always accurate.
When reporting that a line is too long, include the line number in the
error message.  While I'm here, add a note that the "line too long"
message isn't always accurate.

PR:		35395
Submitted by:	andrew@ugh.net.au

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase