If we don't do this then the following line:
weakrefmethod;python_version=='2.7' or python_version=='2.6' # PSF
ends up as:
weakrefmethod;python_version
in the cruft output. So we need to add ';' to get the output
as 'weakrefmethod'
Change-Id: I7b32bfe70df3bb24ca301db9952d76451674a0db