Set default backlog_lines = 0 (fixes Debian bug #818374)

This would have defaults move to backlog_always=false / log=true /
backlog_lines=0, which should not cause much trouble as backlog will
be reset after being displayed.

Also, it is doubtfuk anyone would be keeping the default of 10 for
backlog as it is pretty much an undesirable configuration.

We need to annouce this change as important though, so users having
log = false are aware memory usage could increase if they don't set
it manually to another value.

Signed-off-by: Loïc Gomez <bip@animanova.fr>

bip.conf.5

@@ -227,7 +227,7 @@ This option should of course not be enabled if \fBbacklog_lines\fP is 0 !
 If you still want to do so, don't forget to \fB/BIP BLRESET\fP sometimes.
 
 .TP
-\fBbacklog_lines\fP (default: \fB10\fP)
+\fBbacklog_lines\fP (default: \fB0\fP)
 If set to 0, BIP will replay all the logs since last client disconnect. Else,
 it'll replay exactly \fBbacklog_lines\fP lines on each channel and privates.
 Be aware that BIP will replay \fBbacklog_lines\fP lines of all privates, even

scripts/bipgenconfig

@@ -119,7 +119,7 @@ my %optdesc = (
 			'optional' => 1,
 			'depends' => 'log', 'depval' => 'true',
 			'desc' => 'Do you want to activate backlog {play back logs} system ?' },
-		'backlog_lines' => { 'type' => 'i', 'adv' => 0, 'default' => '10',
+		'backlog_lines' => { 'type' => 'i', 'adv' => 0, 'default' => '0',
 			'optional' => 1,
 			'depends' => 'backlog', 'depval' => 'true',
 			'desc' => 'How much line do you want bip to play back upon client connect' .

src/defaults.h

@@ -19,7 +19,7 @@
 #define DEFAULT_BACKLOG 1
 #define DEFAULT_ALWAYS_BACKLOG 0
 #define DEFAULT_BL_MSG_ONLY 0
-#define DEFAULT_BACKLOG_LINES 10
+#define DEFAULT_BACKLOG_LINES 0
 #define DEFAULT_BACKLOG_TIMESTAMP BLTSTime
 #define DEFAULT_BLRESET_ON_TALK 0
 #define DEFAULT_BLRESET_CONNECTION 0