AOSP10 TWRP Merge: fix conflicts and update libraries needed

This allows flame to boot TWRP. Still will need to work on
super partition for vendor and system access.

The plan will be to cherry-pick any updates to android-9.0
through gerrit.twrp.me to this branch as a WIP.
diff --git a/attr/Android.mk b/attr/Android.mk
index 2986ab5..ab1d892 100644
--- a/attr/Android.mk
+++ b/attr/Android.mk
@@ -4,7 +4,7 @@
 LOCAL_SRC_FILES := listxattr.c
 LOCAL_CFLAGS := -c -W
 LOCAL_MODULE := listxattr
-LOCAL_MODULE_TAGS := eng
+LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_CLASS := RECOVERY_EXECUTABLES
 LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/sbin
 LOCAL_PACK_MODULE_RELOCATIONS := false