Updated build.sh to build curl, openssl, and 256k1 if needed

openssl-3.4.2/doc/man1/openssl-nseq.pod

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+=pod
+
+=begin comment
+
+WARNING: do not edit!
+Generated by Makefile from doc/man1/openssl-nseq.pod.in
+
+=end comment
+
+=head1 NAME
+
+openssl-nseq - create or examine a Netscape certificate sequence
+
+=head1 SYNOPSIS
+
+B<openssl> B<nseq>
+[B<-help>]
+[B<-in> I<filename>]
+[B<-out> I<filename>]
+[B<-toseq>]
+[B<-provider> I<name>]
+[B<-provider-path> I<path>]
+[B<-propquery> I<propq>]
+
+=head1 DESCRIPTION
+
+This command takes a file containing a Netscape certificate
+sequence and prints out the certificates contained in it or takes a
+file of certificates and converts it into a Netscape certificate
+sequence.
+
+A Netscape certificate sequence is an old Netscape-specific format that
+can be sometimes be sent to browsers as an alternative to the standard PKCS#7
+format when several certificates are sent to the browser, for example during
+certificate enrollment.  It was also used by Netscape certificate server.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-help>
+
+Print out a usage message.
+
+=item B<-in> I<filename>
+
+This specifies the input filename to read or standard input if this
+option is not specified.
+
+=item B<-out> I<filename>
+
+Specifies the output filename or standard output by default.
+
+=item B<-toseq>
+
+Normally a Netscape certificate sequence will be input and the output
+is the certificates contained in it. With the B<-toseq> option the
+situation is reversed: a Netscape certificate sequence is created from
+a file of certificates.
+
+=item B<-provider> I<name>
+
+=item B<-provider-path> I<path>
+
+=item B<-propquery> I<propq>
+
+See L<openssl(1)/Provider Options>, L<provider(7)>, and L<property(7)>.
+
+=back
+
+=head1 EXAMPLES
+
+Output the certificates in a Netscape certificate sequence
+
+ openssl nseq -in nseq.pem -out certs.pem
+
+Create a Netscape certificate sequence
+
+ openssl nseq -in certs.pem -toseq -out nseq.pem
+
+=head1 COPYRIGHT
+
+Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the Apache License 2.0 (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut