Several modifications to win/make_dist.py to allow building the NSI installer

Several modifications to win/make_dist.py to allow building the NSI installer

Added copying of all remaining openvpn dependencies to dist directory so that
the NSI installer script (win/openvpn.nsi) can find and use them more easily.
This includes openvpn.exe, openvpnserv.exe, libpkcs11-helper-1.dll, openssl.exe,
and example files. The associated, external DDL/manifest files are copied also,
so that embedding them with mt.exe is easier. This is a temporary solution until
nmake makefiles are modified to automate this process, except for a few of the
library dependencies (lzo2.dll and libpkcs11-helper-1.dll).

Signed-off-by: Samuli Seppänen <samuli@openvpn.net>
Acked-by: James Yonan <james@openvpn.net>
Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>