[MCL-255] Launcher output reduntantly made

I launch minecraft under a batch file for cmd output. (This file also changes the location of appdata so I don't accidently open up modern saves or try to connect to servers).
Expected result: Launcher(client) provides the output log in a logical manner.
In 1.5 this is what happens:

 
Starting up SoundSystem...
Initializing LWJGL OpenAL
    (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.or
g)
OpenAL initialized.

2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/la
va_flow.txt
2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/wa
ter_flow.txt
2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/fi
re_0.txt
2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/fi
re_1.txt
2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/la
va.txt
2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/po
rtal.txt
2013-05-11 15:17:31 [CLIENT] [INFO] Found animation info for: textures/blocks/wa
ter.txt
2013-05-11 15:17:33 [CLIENT] [INFO] Found animation info for: textures/items/clo
ck.txt
2013-05-11 15:17:33 [CLIENT] [INFO] Found animation info for: textures/items/com
pass.txt

(Most of the log is truncated here, only including some)
Actual result:
In the new launcher:

Client>
Client> Starting up SoundSystem...
Client> Initializing LWJGL OpenAL
Client>     (The LWJGL binding of OpenAL.  For more information, see http://www.
lwjgl.org)
Client> OpenAL initialized.
Client>
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/lava_flow.txt
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/water_flow.txt
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/fire_0.txt
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/fire_1.txt
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/lava.txt
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/portal.txt
Client> 2013-05-11 15:11:57 [CLIENT] [INFO] Found animation info for: textures/b
locks/water.txt
Client> 2013-05-11 15:11:59 [CLIENT] [INFO] Found animation info for: textures/i
tems/clock.txt
Client> 2013-05-11 15:11:59 [CLIENT] [INFO] Found animation info for: textures/i
tems/compass.txt

It shows client twice, and even on empty lines, it prints client. This is just messy.