x/build: allow installation in a different directory on macos

[adg]

The default is /usr/local/go, but it would be nice if it could do the right things if
you elect to install elsewhere.

[4ad]

Comment 1:

To my knowledge this is a limitation of Mac OS X .pkg system. Another limitation is that
there's no uninstall (NeXTSTEP had an uninstall script which still works on Mac OS X).

[rsc]

Comment 2:

Maybe later; too late.

Labels changed: added priority-later, removed priority-go1.

[rsc]

Comment 3:

Labels changed: added go1.1maybe.

[rsc]

Comment 5:

[The time for maybe has passed.]

Labels changed: removed go1.1maybe.

[rsc]

Comment 6:

Labels changed: added go1.3maybe.

[rsc]

Comment 9:

Labels changed: added release-none, removed go1.3maybe.

[rsc]

Comment 10:

Labels changed: added repo-main.