add spaces around PACKAGE_VERSION to fix FTBFS with -std=c++11

debian/changelog

@@ -5,6 +5,7 @@ apt (0.9.4) UNRELEASED; urgency=low
     - after many years of pointless discussions disable http/1.1 pipelining
       by default as many webservers and proxies seem to be unable to conform
       to specification must's (rfc2616 section 8.1.2.2) (LP: #996151)
+    - add spaces around PACKAGE_VERSION to fix FTBFS with -std=c++11
   * apt-pkg/pkgcachegen.cc:
     - make IsDuplicatedDescription static so that it is really private
       as we don't need a symbol for it as it is not in a header
@@ -42,9 +43,6 @@ apt (0.9.4) UNRELEASED; urgency=low
   * apt-pkg/algorithms.cc:
     - fix memory leak of Flags in pkgSimulate by a proper destructor
 
-  [ David Kalnischkies ]
-  * 
-
  -- David Kalnischkies <kalnischkies@gmail.com>  Fri, 11 May 2012 23:26:59 +0200
 
 apt (0.9.3) unstable; urgency=low

methods/http.cc

@@ -758,7 +758,7 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
           Base64Encode(Uri.User + ":" + Uri.Password) + "\r\n";
    }
    Req += "User-Agent: " + _config->Find("Acquire::http::User-Agent",
-		"Debian APT-HTTP/1.3 ("PACKAGE_VERSION")") + "\r\n\r\n";
+		"Debian APT-HTTP/1.3 (" PACKAGE_VERSION ")") + "\r\n\r\n";
    
    if (Debug == true)
       cerr << Req << endl;

methods/https.cc

@@ -219,7 +219,7 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
    curl_easy_setopt(curl, CURLOPT_USERAGENT,
 	_config->Find("Acquire::https::User-Agent",
 		_config->Find("Acquire::http::User-Agent",
-			"Debian APT-CURL/1.0 ("PACKAGE_VERSION")").c_str()).c_str());
+			"Debian APT-CURL/1.0 (" PACKAGE_VERSION ")").c_str()).c_str());
 
    // set timeout
    int const timeout = _config->FindI("Acquire::https::Timeout",