Description: Fix qreal VS double issues.

 This patch tries to fix qreal VS double issues for ARM

 There are two seperate issues, the first is trivial just a typecast on
 a const.

 The second is however less-trivial and needs to be checked
 before merging. sip doesn't seem to like the type
 QVector<double> on platforms where qreal is float but changing
 the type to qreal may have knock-on impacts on the native code.

 QGIS Issue: http://hub.qgis.org/issues/11148
 Debian Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=760535

Author: Peter Michael Green <plugwash@debian.org>