Flang Frontend on Github

[John Leidel]

All, I wanted to send out a brief notice that the first code drop for Flang has been posted on Github.  This code was rebased on LLVM's trunk from 2015-04-28.  Several things to keep in mind: 

- The current codebase is lightly tested.  This has been identified as a major area of development moving forward

- The libflangrt runtime library source is not yet posted.  I have the source, but have yet to ensure that it builds against the rebased frontend

- The build requires the same cmake dependencies from the current LLVM Trunk.  It currently does not support GNU make

*** This version is posted in order to jumpstart our development efforts.  As noted in a previous mail, we are working to move Flang up to an official LLVM sub-project.  I'll keep the list updated as this progresses. 

Known updates to the original CodeThinkLabs version: 

- The license file was updated to the latest version posted with LLVM's trunk 

- The README file was updated to reflect the latest Github locations

- A small number of notes with respect to development items moving forward (see TargetInfo implementation)

The Github URL is as follows: 

https://github.com/llvm-flang/flang

Please submit bugs and patches through the normal Github process.  

Thanks again to Hal Finkel and Carlo Bertolli for moving this forward!

cheers

john