build: remove Make.pkg, Make.tool
build: remove Make.pkg, Make.tool

Consequently, remove many package Makefiles,
and shorten the few that remain.

gomake becomes 'go tool make'.

Turn off test phases of run.bash that do not work,
flagged with $BROKEN.  Future CLs will restore these,
but this seemed like a big enough CL already.

R=golang-dev, r
CC=golang-dev
http://codereview.appspot.com/5601057

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