GH628: Add -help to all apps docs.

Signed-off-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

doc/apps/asn1parse.pod

@@ -7,6 +7,7 @@ asn1parse - ASN.1 parsing tool
 =head1 SYNOPSIS
 
 B<openssl> B<asn1parse>
+[B<-help>]
 [B<-inform PEM|DER>]
 [B<-in filename>]
 [B<-out filename>]
@@ -31,6 +32,10 @@ structures. It can also be used to extract data from ASN.1 formatted data.
 
 =over 4
 
+=item B<-help>
+
+Print out a usage message.
+
 =item B<-inform> B<DER|PEM>
 
 the input format. B<DER> is binary format and B<PEM> (the default) is base64

doc/apps/ciphers.pod

@@ -7,6 +7,7 @@ ciphers - SSL cipher display and cipher list tool.
 =head1 SYNOPSIS
 
 B<openssl> B<ciphers>
+[B<-help>]
 [B<-s>]
 [B<-v>]
 [B<-V>]
@@ -29,6 +30,10 @@ the appropriate cipherlist.
 
 =over 4
 
+=item B<-help>
+
+Print out a usage message.
+
 =item B<-s>
 
 Only list supported ciphers: those consistent with the security level. This

doc/apps/speed.pod

@@ -7,6 +7,7 @@ speed - test library performance
 =head1 SYNOPSIS
 
 B<openssl speed>
+[B<-help>]
 [B<-engine id>]
 [B<-elapsed>]
 [B<-evp algo>]
@@ -45,6 +46,10 @@ This command is used to test the performance of cryptographic algorithms.
 
 =over 4
 
+=item B<-help>
+
+Print out a usage message.
+
 =item B<-engine id>
 
 specifying an engine (by its unique B<id> string) will cause B<speed>