Split uVision project source files in groups mbed/hal/src

Files are now grouped based on their path (mbed/common, mbed/targets, *)
Empty folders are not exported.
Add missing --c99 flag to uVision LPC11U24 and LPC1347 projects
Modify uVision LPC1114 template output name and directory
Normalize indentation in all templates

Also see: [Pull Request 71](https://github.com/mbedmicro/mbed/pull/71)