Replace cutils/log.h and rationalize log/log.h and android/log.h

- cutils/log.h treat as deprecated and lead by example
- android/log.h to be used instead of log/log.h if possible
- add system includes that are assumed as side effects
- define LOG_TAG first

Test: compile
Bug: 31289077
Bug: 30465923
Change-Id: I8d99b24c333578c9b5aa9f2a01324bd0bba268dd
diff --git a/cmds/servicemanager/service_manager.c b/cmds/servicemanager/service_manager.c
index 8f4e01b..a31e3c7 100644
--- a/cmds/servicemanager/service_manager.c
+++ b/cmds/servicemanager/service_manager.c
@@ -22,7 +22,7 @@
 #define ALOGE(x...) fprintf(stderr, "svcmgr: " x)
 #else
 #define LOG_TAG "ServiceManager"
-#include <android/log.h>
+#include <log/log.h>
 #endif
 
 struct audit_data {