Funny enough: GUI can give me '*' as a font's foundry, but if I RETURN '*' as a foundry,

it crashes - parses this XLFD, sets foundry to 0 and later use strcasecmp on this pointer.
1. 'Fix' TGFontPool not to use 0 pointers,
2. return fake foundry.


git-svn-id: http://root.cern.ch/svn/root/trunk@44151 27541ba8-7e3a-0410-8455-c3a389f83636