Add -V for version information to plink, pscp, and psftp.

[originally from svn r4092]

plink.c

@@ -233,6 +233,13 @@ static void usage(void)
     printf("  -C        enable compression\n");
     printf("  -i key    private key file for authentication\n");
     printf("  -s        remote command is an SSH subsystem (SSH-2 only)\n");
+    printf("  -V        print version information\n");
+    exit(1);
+}
+
+static void version(void)
+{
+    printf("plink: %s\n", ver);
     exit(1);
 }
 
@@ -326,6 +333,8 @@ int main(int argc, char **argv)
 	    } else if (!strcmp(p, "-s")) {
 		/* Save status to write to cfg later. */
 		use_subsystem = 1;
+	    } else if (!strcmp(p, "-V")) {
+                version();
 	    } else {
 		fprintf(stderr, "plink: unknown option \"%s\"\n", p);
 		errors = 1;

psftp.c

@@ -1779,6 +1779,13 @@ static void usage(void)
     printf("  -C        enable compression\n");
     printf("  -i key    private key file for authentication\n");
     printf("  -batch    disable all interactive prompts\n");
+    printf("  -V        print version information\n");
+    cleanup_exit(1);
+}
+
+static void version(void)
+{
+  printf("psftp: %s\n", ver);
   cleanup_exit(1);
 }
 
@@ -2010,6 +2017,8 @@ int psftp_main(int argc, char *argv[])
 	} else if (strcmp(argv[i], "-h") == 0 ||
 		   strcmp(argv[i], "-?") == 0) {
 	    usage();
+	} else if (strcmp(argv[i], "-V") == 0) {
+	    version();
 	} else if (strcmp(argv[i], "-batch") == 0) {
 	    console_batch_mode = 1;
 	} else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) {

scp.c

@@ -2064,6 +2064,7 @@ static void usage(void)
     printf("  -i key    private key file for authentication\n");
     printf("  -batch    disable all interactive prompts\n");
     printf("  -unsafe   allow server-side wildcards (DANGEROUS)\n");
+    printf("  -V        print version information\n");
 #if 0
     /*
      * -gui is an internal option, used by GUI front ends to get
@@ -2078,6 +2079,12 @@ static void usage(void)
     cleanup_exit(1);
 }
 
+void version(void)
+{
+    printf("pscp: %s\n", ver);
+    cleanup_exit(1);
+}
+
 void cmdline_error(char *p, ...)
 {
     va_list ap;
@@ -2129,6 +2136,8 @@ int psftp_main(int argc, char *argv[])
 	    statistics = 0;
 	} else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) {
 	    usage();
+	} else if (strcmp(argv[i], "-V") == 0) {
+            version();
 	} else if (strcmp(argv[i], "-gui") == 0 && i + 1 < argc) {
 	    gui_enable(argv[++i]);
 	    gui_mode = 1;

unix/uxplink.c

@@ -231,6 +231,13 @@ static void usage(void)
     printf("  -C        enable compression\n");
     printf("  -i key    private key file for authentication\n");
     printf("  -s        remote command is an SSH subsystem (SSH-2 only)\n");
+    printf("  -V        print version information\n");
+    exit(1);
+}
+
+static void version(void)
+{
+    printf("plink: %s\n", ver);
     exit(1);
 }
 
@@ -301,6 +308,8 @@ int main(int argc, char **argv)
 	    } else if (!strcmp(p, "-s")) {
                 /* Save status to write to cfg later. */
 		use_subsystem = 1;
+	    } else if (!strcmp(p, "-V")) {
+                version();
 	    } else if (!strcmp(p, "-o")) {
                 if (argc <= 1) {
                     fprintf(stderr,