added meta_conv.1.1.3 for ocaml 4.01.0
treeprint.1.0.2 can be compiled in 4.01.0
added ocamltter.2.1.2 and orakuda.1.2.0
Merge remote-tracking branch 'upstream/master' into for-pull-request
added the checksum of ocamltter.2.1.2
fixed version dependencies of older packages
Merge pull request #1693 from camlspotter/for-pull-request

Updates of my packages