Add Norman Brandinger's suggested `-m' option in plink, to read the

remote command from a local file. Advantage: you can have more than
one line in it, so you can remotely run what's effectively a small
script.

[originally from svn r1010]

putty.h

@@ -168,6 +168,8 @@ typedef struct {
     int ping_interval;                 /* in seconds */
     /* SSH options */
     char remote_cmd[512];
+    char *remote_cmd_ptr;              /* might point to a larger command
+                                        * but never for loading/saving */
     int nopty;
     int compression;
     int agentfwd;