[TIMOB-1409] KeyError with TI_APPID in Titanium SDK 1.4.0

From my build.log:

INFO] One moment, building ...
Traceback (most recent call last):
  File "/Library/Application Support/Titanium/mobilesdk/osx/1.4.0/iphone/builder.py", line 1072, in <module>
    main(sys.argv)
  File "/Library/Application Support/Titanium/mobilesdk/osx/1.4.0/iphone/builder.py", line 263, in main
    appid = os.environ['TI_APPID']
  File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/UserDict.py", line 22, in __getitem__
    raise KeyError(key)
KeyError: 'TI_APPID'
Command /bin/sh failed with exit code 1
Command /bin/sh failed with exit code 1
ProcessPCH /var/folders/zT/zTGx05UiGeW35Sp4L8eSG++++TI/-Caches-/com.apple.Xcode.501/SharedPrecompiledHeaders/SCApp_Prefix-damswgcxhscxowgyykhciidlszcm/SCApp_Prefix.pch.gch SCApp_Prefix.pch normal i386 objective-c com.apple.compilers.gcc.4_2
    cd "/Users/jamie/Documents/Aptana Studio Workspace/sportscalendar/SCApp/build/iphone"
    setenv LANG en_US.US-ASCII

The build process seems to proceed "normally" as far as I can tell...I've since monkey-patched this in my codebase and we'll see how it changes anything WRT #1408