Add gawk to buildessential (#2210)

packages/buildessential.rb

@@ -3,7 +3,7 @@ require 'package'
 class Buildessential < Package
   description 'A collection of tools essential to compile and build software.'
   homepage ''
-  version '1.0-2'
+  version '1.0-3'
 
   is_fake
 
@@ -25,6 +25,7 @@ class Buildessential < Package
   depends_on 'wget'     # in some case, some patches might be required and can be downloaded using wget
   depends_on 'unzip'
   depends_on 'zip'
+  depends_on 'gawk'
   
   # cmake
   depends_on 'cmake'