Issue 4105 - [build] Make it possible to build arbitrary ABB revisions

abb-build/build.py

Index: abb-build/build.py
===================================================================
--- a/abb-build/build.py
+++ b/abb-build/build.py
@@ -21,28 +21,29 @@ import os
 import re
 import shutil
 import string
 import subprocess
 import sys
 import tempfile
 
 _BASE_DIR = os.path.dirname(os.path.abspath(__file__))
-_ENSURE_DEPENDENCIES_PATH = os.path.join(_BASE_DIR, "ensure_dependencies.py")
+_ABB_PATH = os.path.normpath(os.path.join(_BASE_DIR, ".."))
+_ENSURE_DEPENDENCIES_PATH = os.path.join(_ABB_PATH, "ensure_dependencies.py")
 _GENERATED_PATH = os.path.join(_BASE_DIR, "generated")
 _GENERATED_MOZCONFIG_PATH = os.path.join(_GENERATED_PATH, "mozconfig")
 _MOZCONFIG_COMMON_PATH = os.path.join(_BASE_DIR, "mozconfig-common")
 _MOZCONFIG_ARM_PATH = os.path.join(_BASE_DIR, "mozconfig-arm")
 _MOZCONFIG_X86_PATH = os.path.join(_BASE_DIR, "mozconfig-x86")
 _MOZCONFIG_STORE_PATH = os.path.join(_BASE_DIR, "mozconfig-store")
 _MOZCONFIG_RELEASE_PATH = os.path.join(_BASE_DIR, "mozconfig-release")
 _MOZCONFIG_CUSTOM_PATH = os.path.join(_BASE_DIR, "mozconfig-custom")
 _MULTI_L10N_PATH = os.path.join(_BASE_DIR, "mozharness", "scripts",
                                 "multil10n.py")
-_ABB_PATH = os.path.normpath(os.path.join(_BASE_DIR, ".."))
+
 _CMD_BUILD = "build"
 _CMD_SIGN = "sign"
 _CMD_BUILD_SIGN = "build-and-sign"
 _ARCH_ARM = "arm"
 _ARCH_X86 = "x86"
 _ARCH_X86_I386 = "i386"
 _ARCHS = (_ARCH_ARM, _ARCH_X86)
 _DIST_STANDALONE = "standalone"