As mentioned on the Cyclotron website, the sources for libthai and libdatrie (both LGPL'd packages) were not available in the PR1.3 Source DVD, and so blocked installing the updated Qt 4 package in the SDK (because both packages were a run-time dependency. The sources have now been provided by sourcecode.request@nokia.com and are available here:

https://github.com/harmattan/libthai
https://github.com/harmattan/libdatrie

This is only important for people wanting to rebuild patched libmeegotouch and qt-components in the Harmattan Platform SDK without the need for dirty hacks (like ignoring runtime and build-time dependencies while installing/building the patched libraries). It's also important when somebody wants to rebuild PR1.3 Qt from source and install it in the SDK.