- Enabled compile on Windows (bzip2 library needed).

- Fixed crash after the second call to RsInit::InitRetroShare when keyring does not exist.
The instance of AuthSSL was created twice and AuthGPG was deleted without stopping the thread. Stopped the AuthGPG thread on exit of RetroShare.
- Added the correct path to the keyring for Windows in RsInit::copyGnuPGKeyrings.
- Changed the detection of the portable version on Windows from the file "gpg.exe" to the file "portable".

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-OpenPGP@5211 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/pqi/authgpg.cc

@@ -90,7 +90,7 @@ void AuthGPG::init(const std::string& path_to_public_keyring,const std::string&
 {
 	if(_instance != NULL)
 	{
-		delete _instance ;
+		exit();
 		std::cerr << "AuthGPG::init() called twice!" << std::endl ;
 	}
 
@@ -98,6 +98,16 @@ void AuthGPG::init(const std::string& path_to_public_keyring,const std::string&
 	_instance = new AuthGPG(path_to_public_keyring,path_to_secret_keyring) ;
 }
 
+void AuthGPG::exit()
+{
+	if(_instance != NULL)
+	{
+		_instance->join();
+		delete _instance ;
+		_instance = NULL;
+	}
+}
+
 AuthGPG::AuthGPG(const std::string& path_to_public_keyring,const std::string& path_to_secret_keyring)
         :p3Config(CONFIG_TYPE_AUTHGPG), 
 		   PGPHandler(path_to_public_keyring,path_to_secret_keyring),

libretroshare/src/pqi/authgpg.h

@@ -110,6 +110,7 @@ class AuthGPG: public p3Config, public RsThread, public PGPHandler
 	public:
 
 		static void init(const std::string& path_to_pubring, const std::string& path_to_secring);
+		static void exit();
 		static AuthGPG *getAuthGPG() { return _instance ; }
 
 		/**

libretroshare/src/pqi/authssl.cc

@@ -66,7 +66,10 @@ void setAuthSSL(AuthSSL *newssl)
 
 void AuthSSLInit()
 {
-	instance_ssl = new AuthSSLimpl();
+	if (instance_ssl == NULL)
+	{
+		instance_ssl = new AuthSSLimpl();
+	}
 }
   
 AuthSSL *AuthSSL::getAuthSSL()