some fixes to the testshape.c code so it more correctly works.

--HG--
extra : rebase_source : 16e302aa18fca6d543bcefa99768a665385fa208
extra : amend_source : 5b2210968e25d6ff3851e1884de6109740fdddd1
define a font-size for the "unicode" message box font so the text isn't unreadable on linux systems