Update compiler and includes to version 1.7.0.

env/include/handles.inc

@@ -36,9 +36,9 @@
 #define _handles_included
 
 /**
- * Handle helper macros.
+ * Preset Handle values.
  */
-enum Handle
+enum Handle: // Tag disables introducing "Handle" as a symbol.
 {
 	INVALID_HANDLE = 0,
 };
@@ -52,10 +52,9 @@ enum Handle
  *       sure you read the documentation on whatever provided the Handle.
  *
  * @param hndl		Handle to close.
- * @return			True if successful, false if not closeable.
  * @error			Invalid handles will cause a run time error.
  */
-native bool:CloseHandle(Handle:hndl);
+native CloseHandle(Handle:hndl);
 
 /**
  * Clones a Handle.  When passing handles in between plugins, caching handles
@@ -76,6 +75,15 @@ native bool:CloseHandle(Handle:hndl);
  */
 native Handle:CloneHandle(Handle:hndl, Handle:plugin=INVALID_HANDLE);
 
+/**
+ * Helper for object-oriented syntax.
+ */
+methodmap Handle __nullable__
+{
+	public Close() = CloseHandle;
+	public ~Handle() = CloseHandle;
+}
+
 /**
  * Do not use this function.  Returns if a Handle and its contents 
  * are readable, whereas INVALID_HANDLE only checks for the absence