Staticify.

Mark some functions "static".

Change-Id: Ia80bccab1f72690729e43f99783d34fe366108b2
diff --git a/vm/compiler/Compiler.c b/vm/compiler/Compiler.c
index 8c26989..1ac6e97 100644
--- a/vm/compiler/Compiler.c
+++ b/vm/compiler/Compiler.c
@@ -327,7 +327,7 @@
     dvmCompilerPatchInlineCache();
 }
 
-bool compilerThreadStartup(void)
+static bool compilerThreadStartup(void)
 {
     JitEntry *pJitTable = NULL;
     unsigned char *pJitProfTable = NULL;