Cross Ports - skip stage and install directly to sysroot

[Michael Vale]

http://www.mediafire.com/download/4xqxzldx29oaxzd/bsd.port.mk.sysrootinstall.patch
I haven't had a chance to test this out because there are some bugs in pkg-1.5.4 source that doesn't let me compile it, but.  it installs to the absolute path, so i'm not sure that's what we want, it might be best to just leave the stage in else pkg might get confused and store the wrong path on the target systems pkgdb and be unable to remove said packages, but I don't know if thats the case for sure or not.
Choice is yours.