[AMIGAOS4] Workaround for vertexattrib on most attribs now
[AMIGAOS4] Workaround for vertexattrib on most attribs now

ptitSeb/gl4es,ptitSeb/glshim,ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/glshim,ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/gl4es