Merge changes from topic "update_make_flags"

* changes:
  Update flags passed to make
  Stop using GCC in toolchain_library
diff --git a/android/variable.go b/android/variable.go
index 9d965d5..5c4d491 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -183,7 +183,6 @@
 	Eng                        *bool `json:",omitempty"`
 	Device_uses_hwc2           *bool `json:",omitempty"`
 	Treble_linker_namespaces   *bool `json:",omitempty"`
-	Sepolicy_split             *bool `json:",omitempty"`
 	Enforce_vintf_manifest     *bool `json:",omitempty"`
 	Pdk                        *bool `json:",omitempty"`
 	Uml                        *bool `json:",omitempty"`