glew: Update to version 1.5.2.
diff --git a/src/glew/SConscript b/src/glew/SConscript
index 1d7dbb9..a49e2da 100644
--- a/src/glew/SConscript
+++ b/src/glew/SConscript
@@ -42,7 +42,7 @@
     ],
 )
 
-env.InstallSharedLibrary(glew, version=(1, 5))
+env.InstallSharedLibrary(glew, version=(1, 5, 2))
 
 if lib_env['platform'] == 'windows':
     glew = lib_env.FindIxes(glew, 'LIBPREFIX', 'LIBSUFFIX')