[Android] Bump version to 2.5.7

[Geoffrey Métais]

vlc-android | branch: 2.5.x | Geoffrey Métais <geoffrey.metais at gmail.com> | Thu Nov  2 11:40:09 2017 +0100| [74b89f224305342f9e1d185c8fe819eb2c0974d8] | committer: Geoffrey Métais

Bump version to 2.5.7

> https://code.videolan.org/videolan/vlc-android/commit/74b89f224305342f9e1d185c8fe819eb2c0974d8
---

 build.gradle | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/build.gradle b/build.gradle
index dfb7a83df..216ecc416 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,8 +28,8 @@ ext {
     compileSdkVersion = 26
     minSdkVersion = 9
     targetSdkVersion = 26
-    versionName = '2.5.6'
-    versionCode = 2050600
+    versionName = '2.5.7'
+    versionCode = 2050700
 //    versionCode scheme is T M NN RR AA
 //    T: Target/Flavour (1 for Android, 2 for Chrome?)
 //    M: Major version from 0 to 9