Ming32 builds of libgcrypt 1.3.0

[Simon Josefsson]

FWIW, libgcrypt 1.3.0 builds fine under mingw32 for me.  The self tests
also passes.  (modulo libtool and wine bugs that I know how to work
around.)

One question though: I notice that ./configure says rndw32 is used and
that it turns the library into GPL.  When building 1.2.4 it says it is
using the 'default' random module, under mingw32, and there is no
similar complaint.  Is the 1.2.4 'default' mingw32 random module under
GPL or LGPL?  If that one was LGPL, would it be possible to optionally
support using the 1.2.4 randomness module for mingw32 builds in 1.3.x?

Thanks,
Simon