[Android] Bump version to 2.5.15

[Geoffrey Métais]

vlc-android | branch: 2.5.x | Geoffrey Métais <geoffrey.metais at gmail.com> | Fri Dec 29 16:42:15 2017 +0100| [a1d6af27d02e2b3a82ba6f0d2659412f5fcbec2b] | committer: Geoffrey Métais

Bump version to 2.5.15

(cherry picked from commit cb366618ea134a1c8c767a9a749137d3e536ae9d)

> https://code.videolan.org/videolan/vlc-android/commit/a1d6af27d02e2b3a82ba6f0d2659412f5fcbec2b
---

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

diff --git a/build.gradle b/build.gradle
index 07bf962d1..ec27d25c9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,8 +28,8 @@ ext {
     compileSdkVersion = 26
     minSdkVersion = 9
     targetSdkVersion = 26
-    versionName = '2.5.14'
-    versionCode = 2051400
+    versionName = '2.5.15'
+    versionCode = 2051500
 //    versionCode scheme is T M NN RR AA
 //    T: Target/Flavour (1 for Android, 2 for Chrome?)
 //    M: Major version from 0 to 9