update version number in Makefile.os2 too
diff --git a/Makefile.os2 b/Makefile.os2
index 9f96d73..11ef376 100644
--- a/Makefile.os2
+++ b/Makefile.os2
@@ -2,7 +2,7 @@
# wmake -f Makefile.os2
LIBNAME = SDL2
-VERSION = 2.0.10
+VERSION = 2.0.11
DESCRIPTION = Simple DirectMedia Layer 2
LIBHOME = .