llvm-svn: 142173

This removes support for building llvm-gcc. It will eventually add support for
building other projects.

llvm-svn: 142165

to have structured log files rather than one big file produced by
piping output.

llvm-svn: 128378

llvm-svn: 127224

llvm-svn: 127155

llvm-svn: 113965

llvm-svn: 113747

llvm-svn: 113479

llvm-svn: 113401

llvm-svn: 113398

llvm-svn: 113395

llvm-svn: 113393

2-phase build of llvm and llvm-gcc, similar to what the buildbots do, and runs
the regression testsuite.

Things to do:

- Work out some bugs with llvm-gcc flags.
- Not all platforms support ObjC.
- Run the test-suite.

llvm-svn: 113382