[ale] gaim perl plugins

[joh6nn]

just for the sake of posterity, perl plugins have been disabled by 
default, as perl support is apparently flaky somehow (details were 
scarce).  i knew that they couldn't be enabled through the Gui, but it 
took a bit of reading to figure out just how to get them turned on.  the 
answer is to roll your own gaim build with --enable-perl as an option 
for the configure script, and be damn sure you pay attention to STDERR, 
'cause i guarantee you're not get all the way through without a problem.

--joh6nn