Added common file for rake use.

Reviewed by me.

common.rb

@@ -0,0 +1,83 @@
+require 'rake'
+
+# Read in and set up development environment variables.
+if !ENV['BUILD_DIR'] 
+
+    # Global Cappuccino build directory
+    if ENV['CAPP_BUILD']
+        ENV['BUILD_DIR'] = ENV['CAPP_BUILD']
+
+    # Maintain backwards compatibility with steam.
+    elsif ENV['STEAM_BUILD']
+        ENV['BUILD_DIR'] = ENV['STEAM_BUILD']
+
+    # Just build here.
+    else 
+        ENV['BUILD_DIR'] = File.join(File.dirname(__FILE__), 'Build')
+    end
+end
+
+if !ENV['CONFIG']
+    ENV['CONFIG'] = 'Release'
+end
+
+$CONFIGURATION              = ENV['CONFIG']
+$BUILD_DIR                  = File.expand_path(ENV['BUILD_DIR'])
+$PRODUCT_DIR                = File.join($BUILD_DIR, $CONFIGURATION)
+$ENVIRONMENT_DIR            = File.join($BUILD_DIR, $CONFIGURATION, 'env')
+$ENVIRONMENT_BIN_DIR        = File.join($ENVIRONMENT_DIR, 'bin')
+$ENVIRONMENT_LIB_DIR        = File.join($ENVIRONMENT_DIR, 'lib') 
+$ENVIRONMENT_FRAMEWORKS_DIR = File.join($ENVIRONMENT_LIB_DIR, 'Frameworks')
+
+$HOME_DIR        = File.expand_path(File.dirname(__FILE__))
+$LICENSE_FILE    = File.expand_path(File.join(File.dirname(__FILE__), 'LICENSE'))
+
+if !(defined? COMMON_DO_ONCE)
+
+    COMMON_DO_ONCE = true
+
+    $LOAD_PATH << File.join($HOME_DIR, 'Rake')
+    ENV['PATH'] = $ENVIRONMENT_BIN_DIR + ':' + ENV['PATH']
+end
+
+require 'objective-j'
+
+$env = ""
+$env += %{CONFIG="#{ENV['CONFIG']}" } if ENV['CONFIG']
+$env += %{BUILD_DIR="#{ENV['BUILD_DIR']}" } if ENV['BUILD_DIR']
+
+def subrake(directories)
+    directories.each do |directory|
+        system %{cd #{directory} && #{$env} #{$0}}
+    end
+end
+
+# Shared Resrouces in env
+$JSJAR_PATH = File.expand_path(File.join($HOME_DIR, 'Tools/Utilities/js.jar'))
+$ENVIRONMENT_JS = File.join($ENVIRONMENT_LIB_DIR, 'js.jar')
+
+file_d $ENVIRONMENT_JS do
+    cp($JSJAR_PATH, $ENVIRONMENT_JS)
+end
+
+def js2java(inputfile, className, debug)
+
+    debugString = '-nosource -debug' if debug
+
+    IO.popen("java -classpath #{$JSJAR_PATH}:. #{debugString} org.mozilla.javascript.tools.jsc.Main -o #{className} #{inputfile}") do |shrinksafe|
+        puts shrinksafe.read
+    end
+end
+
+def cat(files, outfile)
+
+    File.open(outfile, "w") do |concated|
+
+        files.each do |file|
+          concated.write IO.read(file)
+        end 
+    end
+end
+
+task :build => [$ENVIRONMENT_JS]
+task :default => [:build]