Set a dedicated variable for the runtime apex libs.

Bug: 124789867
Test: build with coverage, the boot classpath has jacoco.jar in /system/framework, not the apex
Change-Id: Iaa0762b5a674282be95710d0e1fb166a58ec893b
diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index 0eb162d..ee3cc8d 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -36,7 +36,7 @@
 
 	BootJars []string // modules for jars that form the boot class path
 
-	TargetCoreJars                []string // modules for jars that are in the runtime apex
+	RuntimeApexJars               []string // modules for jars that are in the runtime apex
 	ProductUpdatableBootModules   []string
 	ProductUpdatableBootLocations []string