Initial Commit, moving from dev-private and removing private stuff
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+LLVM Development Helpers
+========================
+
+These files do almost all needed actions for developing LLVM/Clang. They
+create the initial source tree, build and test LLVM, coordinate branches
+across repositories, control Git/Svn upstream/origin repositories, etc.
+
+All scripts assume you use one of two development modes:
+
+1. Read-Write Git-Svn Mode:
+
+In this mode, all repositories will be based on Git-Svn and setup that way,
+with the LLVM SVN repo as the source, the official LLVM Git repo as 'upstream',
+a Linaro git repository as 'origin' (populated at prepare phase).
+
+The origin repo is meant to be a back-up and share across Linaro developers,
+and since this is public, even external developers. We may use branches on
+those repos for Jenkins / Buildbot testing in the future.
+
+All commits will be done via Git-Svn (dcommit) and git-svn-commit will check
+if the repo is up-to-date before doing so. It'll also warn if you have more
+than one commit, or if you try to commit from master. The former can be
+forced, but not the latter.
+
+2. Read-Only Git Mode:
+
+In this mode, the prepare script doesn't setup Git-Svn, and relies only on
+LLVM's public Git repo for read-only checkout. You can still have your own
+local branches, but they will be de-coupled from the Linaro git tree (unless
+you cherry-pick or rebase from them manually).
+
+This type of repo is meant for dev boards, benchmarks and stress tests.
+
+Environment Variables
+---------------------
+
+These scripts rely on three environment variables:
+
+LLVM_SRC : The path to the LLVM source directory. All other repos will be
+ checked out relative to it in ($LLVM_SRC/../<project>) and linked
+ to the right place inside $LLVM_SRC. It is recommended that you
+ set it to a place where all source dirs will be, and only those,
+ for example ~/devel/llvm/src/llvm.
+LLVM_BLD : The path to the (out-of-tree) directory for the release+asserts
+ build. It is recommended that you set it two levels down from the
+ source dirs, so you can have multiple build directories (debug,
+ no-asserts, lld, etc), example ~/devel/llvm/build/llvm.
+LLVM_GITRW : Git-Read-Write mode, which also means using Git-Svn or not.
+ Values can be 'yes' or 'no'.
+
+Dependencies
+------------
+
+In order to fully use these scripts, you're going to need to install a few
+dependencies. Since people use different Linux distributions, the scripts
+don't even try to install that automatically. The dependencies are:
+
+Scripts/Build: libjson-perl cmake ninja-build perl python2.7 ccache
+LLVM: libxml2-dev zlib1g-dev libtinfo-dev python-sphinx binutils-gold
+Test-Suite: python-virtualenv bison groff gawk
+