Remove or replace obsolete uses of throw()

In C++11, destructors are 'noexcept' by default -> remove useless
throw() specifiers. There was one case that wasn't about a destructor: I
replaced the 'throw()' with 'noexcept' because this use of 'throw()' is
deprecated and 'noexcept' offers the intended meaning as far as I can
guess (in C++17, 'throw()' will be equivalent to 'noexcept' anyway). For
more info, see:

  http://en.cppreference.com/w/cpp/language/noexcept_spec
  https://akrzemi1.wordpress.com/2013/08/20/noexcept-destructors/

simgear/nasal/cppbind/detail/from_nasal_helper.cxx

@@ -39,7 +39,7 @@ namespace nasal
   }
 
   //----------------------------------------------------------------------------
-  bad_nasal_cast::~bad_nasal_cast() throw()
+  bad_nasal_cast::~bad_nasal_cast()
   {
 
   }

simgear/nasal/cppbind/detail/from_nasal_helper.hxx

@@ -70,7 +70,7 @@ namespace nasal
        */
       explicit bad_nasal_cast(const std::string& msg);
 
-      virtual ~bad_nasal_cast() throw();
+      virtual ~bad_nasal_cast();
 
     protected:
       std::string _msg;

simgear/scene/material/EffectBuilder.cxx

@@ -85,7 +85,7 @@ BuilderException::BuilderException(const std::string& message,
 {
 }
 
-BuilderException::~BuilderException() throw()
+BuilderException::~BuilderException()
 {
 
 }

simgear/scene/material/EffectBuilder.hxx

@@ -184,7 +184,7 @@ public:
     BuilderException();
     BuilderException(const char* message, const char* origin = 0);
     BuilderException(const std::string& message, const std::string& = "");
-    virtual ~BuilderException() throw();
+    virtual ~BuilderException();
 };
 }
 

simgear/structure/exception.cxx

@@ -49,7 +49,7 @@ sg_location::sg_location (const char* path, int line, int column)
   setPath(path);
 }
 
-sg_location::~sg_location () throw ()
+sg_location::~sg_location ()
 {
 }
 
@@ -144,7 +144,7 @@ sg_throwable::sg_throwable (const char* message, const char* origin)
   setOrigin(origin);
 }
 
-sg_throwable::~sg_throwable () throw ()
+sg_throwable::~sg_throwable ()
 {
 }
 
@@ -185,7 +185,7 @@ sg_throwable::setOrigin (const char* origin)
   }
 }
 
-const char* sg_throwable::what() const throw()
+const char* sg_throwable::what() const noexcept
 {
   try {
     return getMessage();
@@ -215,7 +215,7 @@ sg_error::sg_error(const std::string& message, const std::string& origin)
 {
 }
 
-sg_error::~sg_error () throw ()
+sg_error::~sg_error ()
 {
 }
 
@@ -239,7 +239,7 @@ sg_exception::sg_exception( const std::string& message,
 {
 }
 
-sg_exception::~sg_exception () throw ()
+sg_exception::~sg_exception ()
 {
 }
 
@@ -279,7 +279,7 @@ sg_io_exception::sg_io_exception( const std::string& message,
 {
 }
 
-sg_io_exception::~sg_io_exception () throw ()
+sg_io_exception::~sg_io_exception ()
 {
 }
 
@@ -335,7 +335,7 @@ sg_format_exception::sg_format_exception( const std::string& message,
   setText(text.c_str());
 }
 
-sg_format_exception::~sg_format_exception () throw ()
+sg_format_exception::~sg_format_exception ()
 {
 }
 
@@ -379,7 +379,7 @@ sg_range_exception::sg_range_exception(const std::string& message,
 {
 }
 
-sg_range_exception::~sg_range_exception () throw ()
+sg_range_exception::~sg_range_exception ()
 {
 }
 // end of exception.cxx

simgear/structure/exception.hxx

@@ -31,7 +31,7 @@ public:
   sg_location(const std::string& path, int line = -1, int column = -1);
   sg_location(const SGPath& path, int line = -1, int column = -1);
   explicit sg_location(const char* path, int line = -1, int column = -1);
-  virtual ~sg_location() throw ();
+  virtual ~sg_location();
   virtual const char* getPath() const;
   virtual void setPath (const char* path);
   virtual int getLine () const;
@@ -58,13 +58,13 @@ public:
   enum {MAX_TEXT_LEN = 1024};
   sg_throwable ();
   sg_throwable (const char* message, const char* origin = 0);
-  virtual ~sg_throwable () throw ();
+  virtual ~sg_throwable ();
   virtual const char* getMessage () const;
   virtual const std::string getFormattedMessage () const;
   virtual void setMessage (const char* message);
   virtual const char* getOrigin () const;
   virtual void setOrigin (const char *origin);
-  virtual const char* what() const throw();
+  virtual const char* what() const noexcept;
 private:
   char _message[MAX_TEXT_LEN];
   char _origin[MAX_TEXT_LEN];
@@ -87,7 +87,7 @@ public:
   sg_error ();
   sg_error (const char* message, const char* origin = 0);
   sg_error (const std::string& message, const std::string& origin = "");  
-  virtual ~sg_error () throw ();
+  virtual ~sg_error ();
 };
 
 
@@ -111,7 +111,7 @@ public:
   sg_exception ();
   sg_exception (const char* message, const char* origin = 0);
   sg_exception (const std::string& message, const std::string& = "");
-  virtual ~sg_exception () throw ();
+  virtual ~sg_exception ();
 };
 
 
@@ -136,8 +136,8 @@ public:
   sg_io_exception (const std::string &message, const std::string &origin = "");
   sg_io_exception (const std::string &message, const sg_location &location, 
     const std::string &origin = "");
-    
-  virtual ~sg_io_exception () throw ();
+
+  virtual ~sg_io_exception ();
   virtual const std::string getFormattedMessage () const;
   virtual const sg_location &getLocation () const;
   virtual void setLocation (const sg_location &location);
@@ -165,7 +165,7 @@ public:
 		       const char* origin = 0);
   sg_format_exception (const std::string& message, const std::string& text,
 		       const std::string& origin = "");
-  virtual ~sg_format_exception () throw ();
+  virtual ~sg_format_exception ();
   virtual const char* getText () const;
   virtual void setText (const char* text);
 private:
@@ -190,7 +190,7 @@ public:
                       const char* origin = 0);
   sg_range_exception (const std::string& message,
                       const std::string& origin = "");
-  virtual ~sg_range_exception () throw ();
+  virtual ~sg_range_exception ();
 };
 
 #endif