gnu: Add adb.

* gnu/packages/android.scm: New file.
* gnu/packages/patches/libbase-fix-includes.patch: New file.
* gnu/packages/patches/libbase-use-own-logging.patch: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES, dist_patch_DATA): Add them.

Co-Authored-By: Marius Bakke <mbakke@fastmail.com>

gnu/packages/patches/libbase-use-own-logging.patch

@@ -0,0 +1,80 @@
+Patch copied from:
+https://android.googlesource.com/platform/system/core/+/e5dd71a290f664d3f3bf0dd8a4bad411dc7ad416
+
+From e5dd71a290f664d3f3bf0dd8a4bad411dc7ad416 Mon Sep 17 00:00:00 2001
+From: Elliott Hughes <enh@google.com>
+Date: Thu, 28 Jul 2016 15:15:28 -0700
+Subject: [PATCH] libbase should use its own logging!
+
+Not doing so led to us using a bogus log tag.
+
+Bug: http://b/30281203
+Change-Id: I3ac91758a1a043146c65f2ae0f36fcfbe372c30f
+---
+ base/file.cpp    | 11 +++++------
+ base/logging.cpp |  3 +--
+ 2 files changed, 6 insertions(+), 8 deletions(-)
+
+diff --git a/base/file.cpp b/base/file.cpp
+index da1adba19..4e7ac82d1 100644
+--- a/base/file.cpp
++++ b/base/file.cpp
+@@ -24,9 +24,8 @@
+ #include <string>
+ 
+ #include "android-base/macros.h"  // For TEMP_FAILURE_RETRY on Darwin.
++#include "android-base/logging.h"
+ #include "android-base/utf8.h"
+-#define LOG_TAG "base.file"
+-#include "cutils/log.h"
+ #include "utils/Compat.h"
+ 
+ namespace android {
+@@ -86,22 +85,22 @@ bool WriteStringToFile(const std::string& content, const std::string& path,
+   int flags = O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_NOFOLLOW | O_BINARY;
+   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), flags, mode));
+   if (fd == -1) {
+-    ALOGE("android::WriteStringToFile open failed: %s", strerror(errno));
++    PLOG(ERROR) << "android::WriteStringToFile open failed";
+     return false;
+   }
+ 
+   // We do an explicit fchmod here because we assume that the caller really
+   // meant what they said and doesn't want the umask-influenced mode.
+   if (fchmod(fd, mode) == -1) {
+-    ALOGE("android::WriteStringToFile fchmod failed: %s", strerror(errno));
++    PLOG(ERROR) << "android::WriteStringToFile fchmod failed";
+     return CleanUpAfterFailedWrite(path);
+   }
+   if (fchown(fd, owner, group) == -1) {
+-    ALOGE("android::WriteStringToFile fchown failed: %s", strerror(errno));
++    PLOG(ERROR) << "android::WriteStringToFile fchown failed";
+     return CleanUpAfterFailedWrite(path);
+   }
+   if (!WriteStringToFd(content, fd)) {
+-    ALOGE("android::WriteStringToFile write failed: %s", strerror(errno));
++    PLOG(ERROR) << "android::WriteStringToFile write failed";
+     return CleanUpAfterFailedWrite(path);
+   }
+   close(fd);
+diff --git a/base/logging.cpp b/base/logging.cpp
+index 769c266c9..959bb8b05 100644
+--- a/base/logging.cpp
++++ b/base/logging.cpp
+@@ -43,12 +43,11 @@
+ 
+ #include "android-base/macros.h"
+ #include "android-base/strings.h"
+-#include "cutils/threads.h"
+ 
+ // Headers for LogMessage::LogLine.
+ #ifdef __ANDROID__
+ #include <android/set_abort_message.h>
+-#include "cutils/log.h"
++#include "log/log.h"
+ #else
+ #include <sys/types.h>
+ #include <unistd.h>
+-- 
+2.11.0
+