Support, on Unix only (so far), for OpenSSH-style generic proxying

(running a local command in a pair of pipes and proxying through
that, for example `ssh proxyhost nc -q0 %host %port').

[originally from svn r3164]

Recipe

@@ -118,11 +118,11 @@ SFTP     = sftp int64 logging
 # Miscellaneous objects appearing in all the network utilities (not
 # Pageant or PuTTYgen).
 WINMISC  = misc version winstore settings tree234 winnet proxy cmdline
-         + windefs winmisc
+         + windefs winmisc pproxy
 UXMISC   = misc version uxstore settings tree234 uxsel uxnet proxy cmdline
-         + uxmisc
+         + uxmisc uxproxy
 MACMISC  = misc version macstore settings tree234 macnet mtcpnet otnet proxy
-         + macmisc macabout
+         + macmisc macabout pproxy
 
 # Character set library, for use in pterm.
 CHARSET  = sbcsdat slookup sbcs utf8 toucs fromucs xenc mimeenc macenc localenc