Add help text for some verify options

Fills in the help text for a number of options to verify that were blank.
Reviewed-by: NRich Salz <rsalz@openssl.org>

apps/verify.c

@@ -83,14 +83,18 @@ OPTIONS verify_options[] = {
     {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
     {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
     {"help", OPT_HELP, '-', "Display this summary"},
-    {"verbose", OPT_VERBOSE, '-'},
-    {"CApath", OPT_CAPATH, '/'},
-    {"CAfile", OPT_CAFILE, '<'},
-    {"untrusted", OPT_UNTRUSTED, '<'},
-    {"trusted", OPT_TRUSTED, '<'},
-    {"CRLfile", OPT_CRLFILE, '<'},
-    {"crl_download", OPT_CRL_DOWNLOAD, '-'},
-    {"show_chain", OPT_SHOW_CHAIN, '-'},
+    {"verbose", OPT_VERBOSE, '-',
+        "Print extra information about the operations being performed."},
+    {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"},
+    {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
+    {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
+    {"trusted", OPT_TRUSTED, '<', "A file of additional trusted certificates"},
+    {"CRLfile", OPT_CRLFILE, '<',
+        "File containing one or more CRL's (in PEM format) to load"},
+    {"crl_download", OPT_CRL_DOWNLOAD, '-',
+        "Attempt to download CRL information for this certificate"},
+    {"show_chain", OPT_SHOW_CHAIN, '-',
+        "Display information about the certificate chain"},
     OPT_V_OPTIONS,
 #ifndef OPENSSL_NO_ENGINE
     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},