Bug 1051987 - By default, hide the disabled commands. They are eating the display for no value. $ ./mach -v help bring them back. r=jmaher

From 7c2de97792113d3415acf2cfa1591fa05c5b07a8 Mon Sep 17 00:00:00 2001
 display for no value. $ ./mach -v help bring them back.
---
 build/mach_bootstrap.py        |  2 +-
 python/mach/mach/dispatcher.py | 14 +++++++-------
 python/mach/mach/main.py       |  3 +++
 3 files changed, 11 insertions(+), 8 deletions(-)