差分というかコミットログですね。
$ repo forall -pc 'git log --oneline --numstat --no-merges android-5.1.0_r1..android-5.1.0_r3'
project build/
d61ef57 "LMY47I"
1 1 core/build_id.mk
8d5f0f9 "LMY47H"
1 1 core/build_id.mk
16eea6e LMY47G
1 1 core/build_id.mk
be9ec01 "LMY47F"
1 1 core/build_id.mk
7b2e9f0 LMY47E
1 1 core/build_id.mk
project cts/
cc8bdfa Add android.hardware.cts.SensorTest#testBatchAndFlush to knownfailures
7 0 tests/expectations/knownfailures.txt
project development/
fcc638d Fix the build
2 1 samples/ApiDemos/src/com/example/android/apis/app/DeviceAdminSample.java
project external/apache-harmony/
4a932e7 Fix flaky test ThreadStartTest
30 23 jdwp/src/test/java/org/apache/harmony/jpda/tests/jdwp/Events/ThreadStartTest.java
project frameworks/base/
0590e4e Changing usage of carrier name field of SubInfoRecord
2 1 telephony/java/android/telephony/SubscriptionInfo.java
f1f0c57 Keyguard: Use plmn/spn broadcast when no SIMs
23 3 packages/Keyguard/src/com/android/keyguard/CarrierText.java
ceb1699 Fix change IME content description
1 0 packages/Keyguard/res/layout/keyguard_password_view.xml
3 0 packages/Keyguard/res/values/strings.xml
0 2 packages/SystemUI/res/values/strings.xml
e34c3bc Remove TrustAgent whitelisting API
0 2 api/current.txt
0 2 api/system-current.txt
2 0 core/java/android/app/admin/DevicePolicyManager.java
project frameworks/opt/telephony/
a081eb7 Lightweight fix for incorrect locale changes - DO NOT MERGE
38 14 src/java/com/android/internal/telephony/MccTable.java
af94615 Notify subscriptionInfoChanged in setPlmnSpn even without sim.
4 1 src/java/com/android/internal/telephony/SubscriptionController.java
36d48c6 Set carrierName of subInfo to null while creating/updating subInfo.
1 9 src/java/com/android/internal/telephony/SubscriptionController.java
3 9 src/java/com/android/internal/telephony/SubscriptionInfoUpdater.java
project packages/apps/Settings/
2fc5bc6 Use TelephonyManager api to get SPN of sim to display in UI.
7 1 src/com/android/settings/sim/SimSettings.java
project prebuilts/sdk/
d9486e6 Remove TrustAgent whitelisting API
0 2 api/22.txt
0 2 system-api/22.txt