add a get_destdir.
unimplemented is fatal. exit at the end.
basic lib install.
misc removal.
don't pass the cmd args to the cmd callback.
add a stub get subcommand.
fix bug where subcommands did not receive args through Arg.parse_argv
small style change
allow to specify targets in build.

* syntax is slightly odds as to make sure stuff are uniques
* propably can search the target before and automatically try to resolve
  from inexact name.
* need better errors in case target doesn't exists.

fix #35.
Fixed the annot patch
Merge pull request #30 from vbmithr/master

Fix part of #22
Typo
Use ocamlmklib to deal with linking C bindings
Updated TODO
Added a draft of a specification for the .obuild file format
Disable using ocamlmklib with a boolean option
Fix bytecode linking issue when using C libraries/bindings
Merge pull request #39 from vbmithr/master

Use ocamlmklib to build C bindings
Merge pull request #44 from vbmithr/TODO

Updated TODO
Merge pull request #45 from vbmithr/fix-bytecode-linking

Fix bytecode linking issue when using C libraries/bindings