update perl to 5.20.1, use gnu ld, prepare for new perl module naming
perl module build script generator
bootstrap MetaCPAN-Client: add required perl module build scripts
add Mail-SpamAssassin perl mod and deps
rm old perl module build scripts
Mail-SpamAssassin and NetAddr-IP build script fixes
add DB_File, Encode-Detect perl mods
add perl mods IO-Pipely, Mojo-IOLoop-ForkCall, Mojolicious
add perl Net-IP
move optional deps on renamed perl packages to the actual replacement packages
use $PROG $VER for dl source in generated perl build scripts
correct lib/include paths for perl5/DB_File
add manifests for renamed perl packages
customise Mail-SpamAssassin build script
new.pl: don't overwrite existing scripts