7045232: G1: pool names are inconsistent with other collectors (don't have 'Space')

Summary: Make sure the eden and survivor pools have "Space" in their name.
Reviewed-by: jmasa, ysr

src/share/vm/services/g1MemoryPool.cpp

@@ -73,7 +73,7 @@ size_t G1MemoryPoolSuper::old_space_used(G1CollectedHeap* g1h) {
 
 G1EdenPool::G1EdenPool(G1CollectedHeap* g1h) :
   G1MemoryPoolSuper(g1h,
-                    "G1 Eden",
+                    "G1 Eden Space",
                     eden_space_committed(g1h), /* init_size */
                     false /* support_usage_threshold */) { }
 
@@ -88,7 +88,7 @@ MemoryUsage G1EdenPool::get_memory_usage() {
 
 G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h) :
   G1MemoryPoolSuper(g1h,
-                    "G1 Survivor",
+                    "G1 Survivor Space",
                     survivor_space_committed(g1h), /* init_size */
                     false /* support_usage_threshold */) { }