Move everything from global namespace to "sp" namespace

When writing the X11 (linux) implementation there was a problem with X11 defining a "Display" type and we also have a Display class in the engine.

So to fix that problem and minimize the risk for running into other name conflicts. We move everything from global namespace.

include/Spectre/System/File.h

@@ -5,7 +5,7 @@
 #include <vector>
 #include <string>
 
-namespace File
+namespace sp { namespace file
 {
 	std::string getBasename(const std::string& path);
 
@@ -14,6 +14,6 @@ namespace File
 	std::string getPathname(const std::string& path);
 
 	std::vector<unsigned char> read(const std::string& path);
-};
+} }
 
 #endif /* SPECTRE_SYSTEM_FILE_H */

include/Spectre/System/Log.h

@@ -2,6 +2,10 @@
 #ifndef SYSTEM_LOG_H
 #define SYSTEM_LOG_H
 
-void log(const char *fmt, ...);
+namespace sp {
+
+	void log(const char *fmt, ...);
+
+} // namespace sp
 
 #endif /* SYSTEM_LOG_H */

include/Spectre/System/MessageHandler.h

@@ -4,6 +4,8 @@
 
 #include "SystemEvent.h"
 
+namespace sp {
+
 class Display;
 
 class MessageHandler
@@ -12,4 +14,6 @@ public :
 	virtual void onSizeChanged(Display* display, int width, int height);
 };
 
+} // namespace sp
+
 #endif /* SPECTRE_SYSTEM_MESSAGEHANDLER_H */

include/Spectre/System/MessageQueue.h

@@ -5,6 +5,8 @@
 #include <Spectre/System/SystemEvent.h>
 #include <queue>
 
+namespace sp {
+
 class MessageQueue
 {
 public :
@@ -18,4 +20,6 @@ protected :
 	std::deque<SysEvent> m_queue;
 };
 
+} // namespace sp
+
 #endif /* SPECTRE_MESSAGE_QUEUE_H */

include/Spectre/System/System.h

@@ -2,11 +2,12 @@
 #ifndef SPECTRE_SYSTEM_SYSTEM_H
 #define SPECTRE_SYSTEM_SYSTEM_H
 
-namespace System
+namespace sp { namespace system
 {
 	unsigned long getMilliseconds();
 
 	void sleep(int milliseconds);
-};
+
+} } // namespace sp::system
 
 #endif /* SPECTRE_SYSTEM_SYSTEM_H */

include/Spectre/System/SystemEvent.h

@@ -2,6 +2,8 @@
 #ifndef SYSTEM_EVENT_H
 #define SYSTEM_EVENT_H
 
+namespace sp {
+
 class Display;
 
 struct SysEvent
@@ -32,7 +34,8 @@ public :
 	// Helper methods
 
 	static SysEvent sizeEvent(Display *display, int width, int height);
-
 };
 
+} // namespace sp
+
 #endif /* SYSTEM_EVENT_H */