[Gpsbabel-code] build failure

[tsteven4 <tst...@gm...>]

It looks like Jenkins had trouble sending email about this which I will 
investigate, but the need for email was triggered by the new text.test

> Running ./testo.d/subrip.test
> Running ./testo.d/teletype.test
> Running ./testo.d/text.test
> diff: reference/gc/GCGCA8~text.txt: No such file or directory
> ERROR comparing reference/gc/GCGCA8~text.txt 
> /var/lib/jenkins/workspace/gpsbabel/gbtemp/gpsbabel.22921/gc.txt
> diff: reference/gc/GCGCA8~html.txt: No such file or directory
> ERROR comparing reference/gc/GCGCA8~html.txt 
> /var/lib/jenkins/workspace/gpsbabel/gbtemp/gpsbabel.22921/gc.html
> Running ./testo.d/tiger.test
> Running ./testo.d/tpo.test
> Running ./testo.d/track-discard.test