dev package headers don't match binary

[Frederik Keim]

libarpack++2-dev contains header the files for the aprack++ library.
However, the headers provided in this package are outdated.
A patch exists that makes them compatible with newer versions of g++,
it is available from http://reuter.mit.edu/software/arpackpatch/.

Obviously, the headers from which the binary was compiled (package libarpack++2c2a)
were patched, and thus the linker reports some rather incomprehensible errors
when trying to link a program including the dev headers against the binary.

Patching the headers solved the linking problem for me.