fix size expectations of message body file tests on windows
set all filehandles to raw in Parser::Perl
Body::File->read always wants the binary body
always binmode when writing from one file to another
when assembling a file from multiple messages, concat with platform newline
windows thread dump has different filesizes than unix thread dump
disable POSIX locker because it has issues on windows
ensure that on windows the multi test has a lock file in existence
skip pop3 tests on win32, since readpipe-opened processes can't open sockets
mbox.win can be in a path with backslashes or forward slashes (cygwin)