Bug 375220, bump versions to {3.0,1.9}a4pre now that alpha 3 has shipped, r=preed

browser/app/module.ver

@@ -1,7 +1,7 @@
 WIN32_MODULE_COMPANYNAME=Mozilla Corporation
 WIN32_MODULE_COPYRIGHT=©Firefox and Mozilla Developers, according to the MPL 1.1/GPL 2.0/LGPL 2.1 licenses, as applicable.
 WIN32_MODULE_PRODUCTVERSION=3,0,0,0
-WIN32_MODULE_PRODUCTVERSION_STRING=3.0a3pre
+WIN32_MODULE_PRODUCTVERSION_STRING=3.0a4pre
 WIN32_MODULE_TRADEMARKS=Firefox is a Trademark of The Mozilla Foundation.
 WIN32_MODULE_DESCRIPTION=Firefox
 WIN32_MODULE_PRODUCTNAME=Firefox

browser/config/version.txt

@@ -1 +1 @@
-3.0a3pre
+3.0a4pre

config/milestone.txt

@@ -10,4 +10,4 @@
 # hardcoded milestones in the tree from these two files.
 #--------------------------------------------------------
 
-1.9a3pre
+1.9a4pre