Support building arbitrary branches

master.cfg

@@ -6,9 +6,6 @@
 # List of the branches being built automatically overnight
 NIGHT_SCHEDULE_BRANCHES = ["master"]
 
-# List of the branches available for force build
-FORCE_SCHEDULE_BRANCHES = ["master", "experimental-build"]
-
 # Dictionary that the buildmaster pays attention to.
 c = BuildmasterConfig = {}
 
@@ -75,9 +72,8 @@ def schedule_force_build(name):
         builderNames=[name],
         codebases=[forcesched.CodebaseParameter(
                 codebase="blender",
-                branch=forcesched.ChoiceStringParameter(
+                branch=forcesched.StringParameter(
                     name="branch",
-                    choices=FORCE_SCHEDULE_BRANCHES,
                     default="master"),
                 # Do not hide revision, can be handy!
                 repository=forcesched.FixedParameter(

master_unpack.py

@@ -122,7 +122,8 @@ if not branch or branch == 'master':
 elif branch == 'experimental-build':
     directory = os.path.join(download_prefix, "experimental")
 else:
-    directory = download_prefix
+    directory = os.path.join(download_prefix, "branches", branch)
+    os.makedirs(directory, exist_ok=True)
 
 try:
     filename = os.path.join(directory, packagename)