Merge pull request #3959 from alcohol/master

composer release 1.6.3

library/composer

@@ -3,8 +3,8 @@
 Maintainers: Composer (@composer), Rob Bast (@alcohol)
 GitRepo: https://github.com/composer/docker.git
 
-Tags: 1.6.2, 1.6, 1, latest
-GitCommit: 8a2a40c3376bac96f8e3db2f129062173bff7734
+Tags: 1.6.3, 1.6, 1, latest
+GitCommit: 4b4c610a981fd8f41756648de4ba15d84e486282
 Directory: 1.6
 
 Tags: 1.5.6, 1.5