@INC: something broke

[Andy Armstrong]

We've broken something with the @INC handling. Take the test suite  
for Lingua::Identify as an example. With our r621 the tests pass.  
With our current code we get

#                   'Can't locate Lingua/Identify.pm in @INC (@INC  
contains: /opt/local/lib/perl5/5.8.8/darwin-2level /opt/local/lib/ 
perl5/5.8.8 /opt/local/lib/perl5/site_perl/5.8.8/darwin-2level /opt/ 
local/lib/perl5/site_perl/5.8.8 /opt/local/lib/perl5/site_perl /opt/ 
local/lib/perl5/vendor_perl/5.8.8/darwin-2level /opt/local/lib/perl5/ 
vendor_perl/5.8.8 /opt/local/lib/perl5/vendor_perl .) at langident  
line 7.
# BEGIN failed--compilation aborted at langident line 7.

The problem seems to be that we no longer set PERL5LIB. What was the  
rationale for that?

I'll fix the problem if someone can explain to me why we're doing  
what we're doing.

-- 
Andy Armstrong, Hexten