Replace ModuleContext.AConfig() with Config()

AConfig() now duplicates Config().  Replace the uses of AConfig()
with Config().  Leave AConfig() for now until code in other
projects is cleaned up.

Test: m checkbuild
Change-Id: Ic88be643049d21dba45dbd1a65588ed94bf43bdc
diff --git a/cc/relocation_packer.go b/cc/relocation_packer.go
index 614f15c..5006623 100644
--- a/cc/relocation_packer.go
+++ b/cc/relocation_packer.go
@@ -53,7 +53,7 @@
 	if ctx.Target().Os != android.Android {
 		enabled = false
 	}
-	if ctx.AConfig().Getenv("DISABLE_RELOCATION_PACKER") == "true" {
+	if ctx.Config().Getenv("DISABLE_RELOCATION_PACKER") == "true" {
 		enabled = false
 	}
 	if ctx.useSdk() {
@@ -68,7 +68,7 @@
 }
 
 func (p *relocationPacker) needsPacking(ctx ModuleContext) bool {
-	if ctx.AConfig().EmbeddedInMake() {
+	if ctx.Config().EmbeddedInMake() {
 		return false
 	}
 	return p.Properties.PackingRelocations