The M4 function AM_PATH_LAME (m4/lame.m4) defined a configure flag
named "--disable-lametest". This is redundant with configure.ac's
--disable-lame-encoder, and specifying both options may break the
build. Since AM_PATH_LAME is only called when the encoder plugin is
enabled, we can safely remove that --disable-lametest option.
[mk: moved this patch after "Refactor and cleanup of shout Ogg and MP3
audio outputs". The original commit message follows, although it is
outdated:]
Creation of shout_mp3 audio output plugin. Basically I just copied the
existing shout plugin and replaced ogg with lame. Uses lame for mp3
encoding. Next step is to pull common functionality out of each shout
plugin and share it between them.
Configuration options for "shout_mp3" are the same as for "shout".
