Merge changes I40a11748,I5e56f17f,Ie3748b6c,I4e1d56a8 into nyc-dev

* changes:
  adb: use asocket's close function when closing.
  adb: switch the socket list mutex to a recursive_mutex.
  adb: clang-format sockets.cpp.
  adb: add implementations of mutex, recursive_mutex.
diff --git a/include/netutils/dhcp.h b/include/netutils/dhcp.h
deleted file mode 100644
index 008dbd8..0000000
--- a/include/netutils/dhcp.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright 2010, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); 
- * you may not use this file except in compliance with the License. 
- * You may obtain a copy of the License at 
- *
- *     http://www.apache.org/licenses/LICENSE-2.0 
- *
- * Unless required by applicable law or agreed to in writing, software 
- * distributed under the License is distributed on an "AS IS" BASIS, 
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
- * See the License for the specific language governing permissions and 
- * limitations under the License.
- */
-
-#ifndef _NETUTILS_DHCP_H_
-#define _NETUTILS_DHCP_H_
-
-#include <sys/cdefs.h>
-#include <arpa/inet.h>
-
-__BEGIN_DECLS
-
-extern int do_dhcp(char *iname);
-extern int dhcp_start(const char *ifname);
-extern int dhcp_start_renew(const char *ifname);
-extern int dhcp_get_results(const char *ifname,
-                            char *ipaddr,
-                            char *gateway,
-                            uint32_t *prefixLength,
-                            char *dns[],
-                            char *server,
-                            uint32_t *lease,
-                            char *vendorInfo,
-                            char *domain,
-                            char *mtu);
-extern int dhcp_stop(const char *ifname);
-extern int dhcp_release_lease(const char *ifname);
-extern char *dhcp_get_errmsg();
-
-__END_DECLS
-
-#endif /* _NETUTILS_DHCP_H_ */
diff --git a/libnetutils/dhcptool.c b/libnetutils/dhcptool.c
index a2d3869..d23afd3 100644
--- a/libnetutils/dhcptool.c
+++ b/libnetutils/dhcptool.c
@@ -20,9 +20,10 @@
 #include <stdbool.h>
 #include <stdlib.h>
 
-#include <netutils/dhcp.h>
 #include <netutils/ifc.h>
 
+extern int do_dhcp(char*);
+
 int main(int argc, char* argv[]) {
   if (argc != 2) {
     error(EXIT_FAILURE, 0, "usage: %s INTERFACE", argv[0]);