Correct x509 manpaghe and add a crl manpage

=pod

=head1 NAME

crl - CRL utility

=head1 SYNOPSIS

B<openssl> B<crl>

[B<-inform PEM|DER>]

[B<-outform PEM|DER>]

[B<-text>]

[B<-in filename>]

[B<-out filename>]

[B<-noout>]

[B<-hash>]

[B<-issuer>]

[B<-lastupdate>]

[B<-nextupdate>]

[B<-CAfile file>]

[B<-CApath dir>]

=head1 DESCRIPTION

The B<crl> command processes CRL files in DER or PEM format.

=head1 COMMAND OPTIONS

=over 4

=item B<-inform DER|PEM>

This specifies the input format. B<DER> format is DER encoded CRL

structure.B<PEM> (the default) is a base64 encoded version of

the DER form with header and footer lines.

=item B<-outform DER|PEM>

This specifies the output format, the options have the same meaning as the 

B<-inform> option.

=item B<-in filename>

This specifies the input filename to read from or standard input if this

option is not specified.

=item B<-out filename>

specifies the output filename to write to or standard output by

default.

=item B<-text>

print out the CRL in text form.

=item B<-noout>

don't output the encoded version of the CRL.

=item B<-hash>

output a hash of the issuer name. This can be use to lookup CRLs in

a directory by issuer name.

=item B<-issuer>

output the issuer name.

=item B<-lastupdate>

output the lastUpdate field.

=item B<-nextupdate>

output the nextUpdate field.

=item B<-CAfile file>

verify the signature on a CRL by looking up the issuing certificate in

B<file>

=item B<-CApath dir>

verify the signature on a CRL by looking up the issuing certificate in

B<dir>. This directory must be a standard certificate directory: that

is a hash of each subject name (using B<x509 -hash>) should be linked

to each certificate.

=back

=head1 EXAMPLES

Convert a CRL file from PEM to DER:

 openssl crl -in crl.pem -outform DER -out crl.der

Output the text form of a DER encoded certificate:

 openssl crl -in crl.der -text -noout

=head1 BUGS

Ideally it should be possible to create a CRL using appropriate options

and files too.

crl2pkcs7(1), ca(1), x509(1)

=cut

=item B<-hash>

outputs the "hash" of the certificate issuer name. This is used in OpenSSL to

form an index to allow certificates in a directory to be lookup up by issuer

outputs the "hash" of the certificate subject name. This is used in OpenSSL to

form an index to allow certificates in a directory to be looked up by subject

name.

=item B<-subject>