complibs/cloog: catch autogen.sh's output

Run autogen.sh through CT_DoExecLog to catch its output.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from fcf5c43cf30f11366d4fe16ee19d6c2143985c62)

 python

 import sys

 sys.path.insert(0, '@@PREFIX@@/share/gcc-@@VERSION@@/python')

 from libstdcxx.v6.printers import register_libstdcxx_printers

 register_libstdcxx_printers (None)

 end