Add IDL.pm to build
Added POD description of add_module
Merge branch 'master' of ssh://pdl.git.sourceforge.net/gitroot/pdl/pdl
Add IDL and work around proj-4.8.0 build problem
Add fallback Carp.pm to work around perl bug
Update VERSION to 2.4.11_011 for more development
Remove IDL from release notes
Update Known_problems with sf.net bugs fixed
Avoid spurious output from missing gunzip/gzip

Now redirect to appropriate NULL device and use diag to
report the error.
inc/Carp.pm Make compatible with perl-5.8.x

Replace "//" operator with "defined() ? :" ternary
construct.