[thrift] preliminary Erlang support (initial import)

Summary:
 * missing {list,map,set}s, inheritance is spotty
 * loose source code, plus everything is one process (application / gen_server behavior is forthcoming)
 * codegen is a mess, need t_fp_generator

Test Plan:
 * codegen invoked without -erl generates identical code for test/
 * calculatorHandler plus 'thrift -erl -r tutorial.thrift' more or less works

Revert Plan: ok


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665146 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/tutorial/erl/ErlClient.rb b/tutorial/erl/ErlClient.rb
new file mode 100644
index 0000000..bcf1300
--- /dev/null
+++ b/tutorial/erl/ErlClient.rb
@@ -0,0 +1,49 @@
+#!/usr/bin/env ruby
+
+$:.push('../gen-rb')
+
+require 'thrift/transport/tsocket'
+require 'thrift/protocol/tbinaryprotocol'
+
+require 'Calculator'
+
+begin
+  
+  transport = TBufferedTransport.new(TSocket.new('localhost', 9090))
+  protocol = TBinaryProtocol.new(transport)
+  client = Calculator::Client.new(protocol)
+  
+  transport.open()
+  
+  client.ping()
+  print "ping()\n"
+  
+  sum = client.add(1,1)
+  print "1+1=", sum, "\n"
+  
+  work = Work.new()
+  
+  begin
+    work.op = Operation::DIVIDE
+    work.num1 = 1
+    work.num2 = 0
+    quot = client.calculate(1, work)
+    puts "Whoa, we can divide by 0 now?"
+  rescue InvalidOperation => io
+    print "InvalidOperation: ", io.why, "\n"
+  end
+  
+  work.op = Operation::SUBTRACT
+  work.num1 = 15
+  work.num2 = 10
+  diff = client.calculate(1, work)
+  print "15-10=", diff, "\n"
+  
+  log = client.getStruct(1)
+  print "Log: ", log.value, "\n"
+  
+  transport.close()
+
+rescue TException => tx
+  print 'TException: ', tx.message, "\n"
+end