Sheriffing/Uplift-Sim/Bump-Trunk

Bump Version Numbers on trunk

In order to Simulate the change for Version Numbers on trunk the following files need to be changed:

diff --git a/browser/config/version.txt b/browser/config/version.txt
--- a/browser/config/version.txt
+++ b/browser/config/version.txt
-50.0a1
+51.0a1

diff --git a/browser/config/version_display.txt b/browser/config/version_display.txt
--- a/browser/config/version_display.txt
+++ b/browser/config/version_display.txt
-50.0a1
+51.0a1

diff --git a/config/milestone.txt b/config/milestone.txt
--- a/config/milestone.txt
+++ b/config/milestone.txt
-50.0a1
+51.0a1

diff --git a/js/src/moz.build b/js/src/moz.build
--- a/js/src/moz.build
+++ b/js/src/moz.build
+# Dummy change to js/src to get SM builds
+

The try syntax for running that simulation can be try: -b do -p all -u all[Ubuntu,10.10,Windows,Android] -t all[Ubuntu,10.10,Windows,Android]