ToolChain: Polish

Change-Id: I97f58a216da6b03b6b45c1e226b1eeafcdae7854
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/toolchain.h

@@ -46,6 +46,7 @@ namespace ProjectExplorer {
 namespace Internal { class ToolChainPrivate; }
 
 namespace Deprecated {
+// Deprecated in 4.3:
 namespace Toolchain {
 enum Language {
     None = 0,
@@ -155,7 +156,6 @@ protected:
     explicit ToolChain(Core::Id typeId, Detection d);
     explicit ToolChain(const ToolChain &);
 
-
     void toolChainUpdated();
 
     // Make sure to call this function when deriving!