Bug#642654: mathgl: FTBFS on ia64 and sparc (symbols differences)

[Julien Cristau]

Package: mathgl
Version: 1.11.2-3
Severity: serious
Justification: fails to build from source

See
https://buildd.debian.org/status/fetch.php?pkg=mathgl&arch=ia64&ver=1.11.2-3&stamp=1316195263
and
https://buildd.debian.org/status/fetch.php?pkg=mathgl&arch=sparc&ver=1.11.2-3&stamp=1316195269

Cheers,
Julien