Solve the python 2.1 incompatibility introduced in rev 7295.
Solve the python 2.1 incompatibility introduced in rev 7295.

Patch by: Martin Furter <mf@rola.ch>

* build/generator/gen_base.py
  (Generator.find_sections): Use 'x.has_key(y)' instead of 'y in x'.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion