pkcs11-tool sets CKA_DECRYPT=true rather then CKA_DERIVE=true when generating EC keys (#277)

RSA and EC keys have different usage attributes. Appropriate attributes are set
When using --keypairgen the user can use the --usage-sign, --usage-decrypt,
and --usage-derive. to get finer control.

 Changes to be committed:
	modified:   tools/pkcs11-tool.c
Merge branch 'master' of github.com:OpenSC/OpenSC
Merge branch 'master' of github.com:OpenSC/OpenSC
PKCS#11 hashes for cards without RAW (see #241)

    The framework-pkcs15.c did not add hashes correctly if the card did not support RSA RAW.
    This change fixes that and only adds hashes if the card did not specify a list of hashes.
    It also will not add hashes done in software if ENABLE_OPENSSL is not specified.
    Some error conditions are also tested for EC mechanisms.

    See bug report #241 for more information.
Merge pull request #279 from dengert/master

pkcs11-tool sets CKA_DECRYPT=true rather then CKA_DERIVE=true when gener...
Merge pull request #298 from dengert/pkcs11Hashes

PKCS#11 hashes for cards without RAW (see #241)
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into master-with-fixes