gnupg is compiled with --enable-minimal flag. This produces a binary that only
supports ElGamal and DSA public key algorithms.
RSA has been the default for `gpg --gen-key` since 2009, so it makes sense to
be able to build a gnupg binary that supports it.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Fixes http://autobuild.buildroot.net/results/45a0856bafa9f2f7e86e2c063528c2b5b04c08d6
gnupg's configure script defaults to prepending an underscore ('_') to
the assembly level functions, which isn't correct for Linux and causes
linker errors for the archs where it has asm optimizations.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>