it is just a place holder for functionality to be added later. Its been added
now so the X509V3_EXT_METHOD structure shouldn't (hopefully) have to change
after the release.
without -debug option to mk1mf.pl. Change _export to is_export (_export is
a reserved word under VC++). Add yucky function prototype function pointer
casts. Sanitise the included files in crypto/x509v3.
Also changed ssleay.exe target to openssl.exe