IPluginFunction implementation is re-entrant across native calls, as heap allocations are delayed until execution

removed ICallable::GetAddressOfPushedParam
removed phys_addr from ICallable::PushArray
fixed a bug where sp_context_t::n_idx was overwritten upon re-entrant calls

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40595

public/IForwardSys.h

@@ -37,7 +37,7 @@
 using namespace SourcePawn;
 
 #define SMINTERFACE_FORWARDMANAGER_NAME		"IForwardManager"
-#define SMINTERFACE_FORWARDMANAGER_VERSION	1
+#define SMINTERFACE_FORWARDMANAGER_VERSION	2
 
 /*
  * There is some very important documentation at the bottom of this file.
@@ -177,14 +177,10 @@ namespace SourceMod
 		 *
 		 * @param inarray	Array to copy.  Cannot be NULL, unlike ICallable's version.
 		 * @param cells		Number of cells to allocate and optionally read from the input array.
-		 * @param phys_addr	Unused.  If a value is passed, it will be filled with NULL.
 		 * @param flags		Whether or not changes should be copied back to the input array.
 		 * @return			Error code, if any.
 		 */
-		virtual int PushArray(cell_t *inarray, 
-								unsigned int cells, 
-								cell_t **phys_addr, 
-								int flags=0) =0;
+		virtual int PushArray(cell_t *inarray, unsigned int cells, int flags=0) =0;
 	};
 
 	/**
@@ -270,6 +266,14 @@ namespace SourceMod
 		{
 			return SMINTERFACE_FORWARDMANAGER_VERSION;
 		}
+		virtual bool IsVersionCompatible(unsigned int version)
+		{
+			if (version < 2 || version > GetInterfaceVersion())
+			{
+				return false;
+			}
+			return true;
+		}
 	public:
 		/**
 		 * @brief Creates a managed forward.  This forward exists globally.