error: 'GDataInputStreamLogger' undeclared (first use in this function)

If you're seeing errors like this:

/Users/jamesmoore/dev/mba/gdata170/Source/Networking/GDataHTTPFetcherLogging.m: In function '-[GDataHTTPFetcher(GDataHTTPFetcherLogging) logCapturePostStream]':
/Users/jamesmoore/dev/mba/gdata170/Source/Networking/GDataHTTPFetcherLogging.m:797: error: 'GDataInputStreamLogger' undeclared (first use in this function)
/Users/jamesmoore/dev/mba/gdata170/Source/Networking/GDataHTTPFetcherLogging.m:797: error: (Each undeclared identifier is reported only once
/Users/jamesmoore/dev/mba/gdata170/Source/Networking/GDataHTTPFetcherLogging.m:797: error: for each function it appears in.)
/Users/jamesmoore/dev/mba/gdata170/Source/Networking/GDataHTTPFetcherLogging.m:800: error: expected expression before ')' token
/Users/jamesmoore/dev/mba/gdata170/Source/Networking/GDataHTTPFetcherLogging.m:804: error: expected expression before ')' token

Set this preprocessor macro: STRIP_GDATA_FETCH_LOGGING=0.

(TBD:  An actual explanation.  Unfortunately, it's not high on my priority list right now.)