Make function names consistent between Rust and C++ (#182)

Author: k-sareen

openjdk/mmtk.h

@@ -141,7 +141,7 @@ struct EdgesClosure {
 typedef struct {
     void (*stop_all_mutators) (void *tls, bool scan_mutators_in_safepoint, MutatorClosure closure);
     void (*resume_mutators) (void *tls);
-    void (*spawn_collector_thread) (void *tls, int kind, void *ctx);
+    void (*spawn_gc_thread) (void *tls, int kind, void *ctx);
     void (*block_for_gc) ();
     void (*out_of_memory) (void *tls, MMTkAllocationError err_kind);
     void* (*get_next_mutator) ();

openjdk/mmtkUpcalls.cpp

@@ -93,7 +93,7 @@ static void mmtk_resume_mutators(void *tls) {
 
 static const int GC_THREAD_KIND_CONTROLLER = 0;
 static const int GC_THREAD_KIND_WORKER = 1;
-static void mmtk_spawn_collector_thread(void* tls, int kind, void* ctx) {
+static void mmtk_spawn_gc_thread(void* tls, int kind, void* ctx) {
   switch (kind) {
     case GC_THREAD_KIND_CONTROLLER: {
       MMTkContextThread* t = new MMTkContextThread(ctx);
@@ -344,7 +344,7 @@ static void mmtk_enqueue_references(void** objects, size_t len) {
 OpenJDK_Upcalls mmtk_upcalls = {
   mmtk_stop_all_mutators,
   mmtk_resume_mutators,
-  mmtk_spawn_collector_thread,
+  mmtk_spawn_gc_thread,
   mmtk_block_for_gc,
   mmtk_out_of_memory,
   mmtk_get_next_mutator,