Undocumented ports.conf options

[Juan Manuel Palacios]

	Hello guys! I'm going over some more documentation in my quest to 
advance on the 1.4 release, and I have some question for you guys about 
some undocumented options in the porsts.conf file. What exactly do the 
following do?

-) porttrace: sets trace mode on by default, no need to pass -t?
-) portverbose: kinda self explanatory, but I wasn't able to figure out 
what verbosity level is enabled, -v or -d?
-) xcodeversion & xcodebuildcmd: Xcode related block in 
base/src/darwinports1.0/darwinports.tcl is rather involved, so I wasn't 
able to gather much information on these....

	On the other hand:

-) destroot_umask: already have it documented locally, will commit 
shortly;
-) libpath & autopath: should we document these? The former seems 
rather dangerous to me and the latter.. well, I don't understand what 
it does but since it plays with libpath...

	Thanks for the info! Regards,...


-jmpp