libbase: add host properties support.

Move init and libprocessgroup away from their existing hacks.

Bug: N/A
Test: ran tests
Change-Id: Ifabdd38e0cc4ab2582f1ea59d32159d386f48eb6
diff --git a/init/util.cpp b/init/util.cpp
index 4455b2e..5f2b87d 100644
--- a/init/util.cpp
+++ b/init/util.cpp
@@ -33,6 +33,7 @@
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
@@ -43,8 +44,6 @@
 #include "reboot.h"
 
 #if defined(__ANDROID__)
-#include <android-base/properties.h>
-
 #include "selinux.h"
 #else
 #include "host_init_stubs.h"