deploy-ng: Replace startfile keyword with applications

applications is a list of Application objects. The Application
constructor takes two arguments: scriptname and runtimename. The
scriptname argument is the path to the Python script that acts as the
entry point to the application. The runtimename argument is the name
that will be given to the frozen runtime.

direct/src/showutil/dist.py

@@ -1,3 +1,4 @@
+import collections
 import os
 import sys
 
@@ -10,9 +11,13 @@ import distutils.file_util
 from direct.showutil import FreezeTool
 import panda3d.core as p3d
 
+
+Application = collections.namedtuple('Application', 'scriptname runtimename')
+
+
 class Distribution(distutils.dist.Distribution):
     def __init__(self, attrs):
-        self.startfile = ''
+        self.applications = []
         self.directories = []
         self.files = []
         self.exclude_paths = []
@@ -32,15 +37,14 @@ class build(distutils.command.build.build):
                 distutils.dir_util.remove_tree(builddir)
             distutils.dir_util.mkpath(builddir)
 
-            basename = os.path.abspath(os.path.join(builddir, self.distribution.get_fullname()))
-
             # Create runtime
-            freezer = FreezeTool.Freezer()
-            freezer.addModule('__main__', filename=self.distribution.startfile)
-            for exmod in self.distribution.exclude_modules:
-                freezer.excludeModule(exmod)
-            freezer.done(addStartupModules=True)
-            freezer.generateRuntimeFromStub(basename)
+            for app in self.distribution.applications:
+                freezer = FreezeTool.Freezer()
+                freezer.addModule('__main__', filename=app.scriptname)
+                for exmod in self.distribution.exclude_modules:
+                    freezer.excludeModule(exmod)
+                freezer.done(addStartupModules=True)
+                freezer.generateRuntimeFromStub(app.runtimename)
 
             # Copy extension modules
             for module, source_path in freezer.extras:
@@ -75,8 +79,7 @@ class build(distutils.command.build.build):
             # Copy Game Files
             ignore_copy_list = [
                 '__pycache__',
-                self.distribution.startfile,
-            ] + freezer.getAllModuleNames() + self.distribution.exclude_paths
+            ] + freezer.getAllModuleNames() + self.distribution.exclude_paths + [i.scriptname for i  in self.distribution.applications]
 
             for copydir in self.distribution.directories:
                 for item in os.listdir(copydir):