THRIFT-3833 haxe http server implementation (by embeding into php web server)
Client: Haxe
Patch: Oleksii Prudkyi <Oleksii.Prudkyi@gmail.com> + some modifications by Jens Geyer

This closes #1013
This closes #1020
diff --git a/lib/haxe/README.md b/lib/haxe/README.md
index 2692be9..c5ad680 100644
--- a/lib/haxe/README.md
+++ b/lib/haxe/README.md
@@ -94,8 +94,8 @@
 Current status
 ========================
 - tested with Haxe C++ target
-- tested with Haxe PHP target (console, binary protocols)
-- transports: Socket, HTTP (client only), Stream
+- tested with Haxe PHP target (console/web server, binary protocols)
+- transports: Socket, HTTP (servers run inside PHP server/PHP target only), Stream
 - protocols: Binary, JSON, Multiplex, Compact
 - tutorial client and server available
 - cross-test client and server available 
@@ -117,3 +117,48 @@
 Javascript:
 - tutorial fails to build because of unsupported Sys.args
 
+PHP HTTP Server notes
+========================
+
+- you have to import PHP files generated by haxe into PHP
+```php
+require_once  dirname(__FILE__) . '/bin/php-web-server/Main-debug.php';
+```
+
+- trace() by default outputs into stdout (http response), so you have to redirect it to stderr or you own logs, something like
+```haxe
+//remap trace to error log
+haxe.Log.trace = function(v:Dynamic, ?infos:haxe.PosInfos) 
+{ 
+	//simulate normal trace https://github.com/HaxeFoundation/haxe/blob/development/std/haxe/Log.hx
+	var newValue : Dynamic;
+	if (infos != null && infos.customParams!=null) {
+		var extra:String = "";
+		for( v in infos.customParams )
+			extra += "," + v;
+		newValue = v + extra;
+	}
+	else {
+		newValue = v;
+	}
+	var msg = infos != null ? infos.fileName + ':' + infos.lineNumber + ': ' : '';
+	Sys.stderr().writeString('${msg}${newValue}\n');
+}
+```
+
+- to allow thrift server to read/write HTTP request/response, it should be pointed out to php streams
+```haxe
+transport =	new TWrappingServerTransport(
+				new TStreamTransport(
+					new TFileStream("php://input", Read),
+					new TFileStream("php://output", Append)
+					)
+				);
+```
+
+- TSimpleServer doesn't stop after first call, so processor.process() should be called instead, or use runOnce property 
+```haxe
+var server = new TSimpleServer( processor, transport, transfactory, protfactory);
+server.runOnce = true;
+```
+