[facebook#38] Move debian_system_builder to build

facebook#41 (review)

Move the debian system builder to subdirectory of build. The
fbcode_builder is shared accross other projects and should not be
modified.

build/fbcode_builder/debian_system_builder.py → build/debian_system_builder/debian_system_builder.py

@@ -15,13 +15,14 @@
 == How to run it? ==
 
 cd build
-python fbcode_builder/debian_system_builder.py > ./build_openr.sh
+python debian_system_builder/debian_system_builder.py > ./build_openr.sh
 sudo chmod +x build_openr.sh
 sudo ./build_openr.sh
 '''
 
 import os
 import distutils.spawn
+import fbcode_builder_path
 
 from fbcode_builder import FBCodeBuilder
 from shell_builder import ShellFBCodeBuilder
@@ -157,8 +158,9 @@ def gcc_version():
     from utils import read_fbcode_builder_config, build_fbcode_builder_config
     install_dir = install_dir()
 
-    config = read_fbcode_builder_config(
-             'debian_system_fbcode_builder_config.py')
+    config_file = os.path.join(os.path.dirname(__file__),
+                               'debian_system_fbcode_builder_config.py')
+    config = read_fbcode_builder_config(config_file)
     builder = DebianSystemFBCodeBuilder()
 
     builder.add_option('projects_dir', install_dir)

build/debian_system_fbcode_builder_config.py → build/debian_system_builder/debian_system_fbcode_builder_config.py

@@ -10,7 +10,7 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 import specs.fbthrift as fbthrift
-import specs.fbzmq as fbzmq
+import debian_specs.fbzmq as fbzmq
 import specs.folly as folly
 import specs.re2 as re2
 from shell_quoting import ShellQuoted, path_join

build/debian_system_builder/fbcode_builder_path.py

@@ -0,0 +1,8 @@
+import os
+import sys
+
+# Add fbcode_builder directory to the path
+sys.path.append(os.path.join(
+    os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
+    "fbcode_builder"
+))