Start process to use rake-compiler-dev-box.

* Update to use iconv version v1.14.
* Set cross platform to 'x86-mingw32' and 'x64-mingw32'. Not sure what 'x86-mswin32-60' is?
* Removed my old notes.
Update dependencies
WiP: change strategy to build dependencies

Change the way the dependencies are built. Instead of using a global
recipe collection, define two methods to build both freetds and
libiconv, which will later be used to hook up the Ruby C extension
compilation.

This might not work yet on all the scenarios.
Added patch for usernames over 30 chars long
Fixed cross-compilation to properly process dependencies and configure using those dependencies
Added rake tasks to set up and perform cross-compilation
Merge latest changes from 'rake-compiler-dev-box'