Make sure *_IgnoreBool is (re)set to 0 when adding base expectations.
This way, a call to *_IgnoreAndReturn() followed by a call to *_ExpectAndReturn() is properly handled (i.e. the function will not be ignored, as instructed by the last statement).
Merge pull request #34 from jlesage/reset_ignore_bool

Make sure *_IgnoreBool is (re)set to 0 when adding base expectations. (Thanks Jocelyn!)