Select SVN or GIT for polling and builder updates.

[rfoos]

Summary

(This change is default SVN, and no changes to the existing methods are made)
Allows buildmaster to select SVN or GIT for Polling and Builders.

llvm.org primarily uses SVN, but also mirrors to Git. Several builders use git, and most use svn. Default is all SVN, no impact to existing builders at lab.llvm.org.

This allows a buildmaster to select SVN or GIT for polling. Each builder updates their sources by reading useGit, and selects svn or git for update.

Git or SVN revision and changelogs are supported in both modes.

Allows a zorg to be used on offsite projects where the primary repositories are git. Allows Git to be selected for performance improvement or any other reason.

The useGit variable is defined to select whether or not to use Git for repo updates (default: false).

Some builders are already using Git. This unifies the SVN or GIT selection without local patches to zorg for Git.

[rfoos]

Coordinating this with Renato.

buildbot/osuosl/master/config/builders.py

 from zorg.buildbot.builders import LLDBBuilder
 
 from zorg.buildbot.builders import LLDBuilder
-reload(LLDBBuilder)
+reload(LLDBuilder)
 from zorg.buildbot.builders import LLDBuilder
 
 from zorg.buildbot.builders import ClangAndLLDBuilder

 reload(SphinxDocsBuilder)
 from zorg.buildbot.builders import SphinxDocsBuilder
 
+# Switch between GIT and SVN Source Access
+# (Also defined in master.cfg)
+useGit = False
+repo_llvm = 'http://llvm.org/git/'
+
+
 # Plain LLVM builders.
 def _get_llvm_builders():
     return [

buildbot/osuosl/master/master.cfg

 
 from buildbot.changes.pb import PBChangeSource
 from zorg.buildbot.changes.llvmpoller import LLVMPoller
+from buildbot.changes.gitpoller import GitPoller
 
 c['change_source'] = [PBChangeSource()]
 
-c['change_source'].append(LLVMPoller(projects=[
+# Switch between GIT and SVN Pollers
+# (Also defined in builders.py)
+useGit = False
+repo_llvm = 'http://llvm.org/git/'
+
+
+# llvm.org projects.
+llvm_projects=[
     "llvm",
     "cfe",
     "clang-tests-external",

     "compiler-rt",
     "lld",
     "lldb",
-    "openmp"]))
+    "openmp"]
 
-#  c['change_source'].append(LLVMPoller("test-suite", "trunk"))
+if useGit:
+    for i in llvm_projects:
+        c['change_source'].append(GitPoller(project=i,
+            repourl=repo_llvm+i,
+            branches=['master']))
+else:
+    c['change_source'].append(LLVMPoller(projects=llvm_projects))
+    #  c['change_source'].append(LLVMPoller("test-suite", "trunk"))
 
 ####### RESOURCE USAGE