I set SAGE_CHECK="yes" to run tests on the spkgs before running `make -j5`

. This gives me another build breaking error, despite using python 2 to build sage

```
In file included from ../../src/Pointset_Powerset_defs.hh:1454,
from ../../src/algorithms.hh:28,
from ../../src/ppl_include_files.hh:18,
from ../../src/ppl_header.hh:38,
from ../../tests/ppl_test.hh:27,
from equals1.cc:25:
../../src/Pointset_Powerset_templates.hh: In instantiation of 'Parma_Polyhedra_Library::Pointset_Powerset<PSET>::Pointset_Powerset(const Parma_Polyhedra_Library::Pointset_Powerset<QH>&, Parma_Polyhedra_Library::Complexity_Class) [with QH = Parma_Polyhedra_Library::Box<Parma_Polyhedra_Library::Interval<__gmp_expr<__mpq_struct [1], __mpq_struct [1]>, Parma_Polyhedra_Library::Interval_Info_Bitset<unsigned int, Parma_Polyhedra_Library::Test::Rational_Real_Open_Interval_Info_Policy> > >; PSET = Parma_Polyhedra_Library::NNC_Polyhedron]':
../../src/Pointset_Powerset_inlines.hh:262:43: required from 'bool Parma_Polyhedra_Library::Pointset_Powerset<PSET>::geometrically_equals(const
Parma_Polyhedra_Library::Pointset_Powerset<PSET>&) const [with PSET =
Parma_Polyhedra_Library::Box<Parma_Polyhedra_Library::Interval<__gmp_expr<__mpq_struct [1], __mpq_struct [1]>, Parma_Polyhedra_Library::Interval_Info_Bitset<unsigned int, Parma_Polyhedra_Library::Test::Rational_Real_Open_Interval_Info_Policy> > >]'
equals1.cc:44:50: required from here
../../src/Pointset_Powerset_templates.hh:66:29: internal compiler error: in type_dependent_expression_p, at cp/pt.c:25100
y_end = y.end(); i != y_end; ++i) {
~~^~~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccb8H3zx.out file, please attach this to your bugreport.
make[7]: *** [Makefile:1245: equals1.o] Error 1
************************************************************************
Error testing package ppl-1.2.p1
********
```