Multiple suffix stripping does not work

[tgross35]

Reported by @gwen-lg in #108 (comment):

In the sentence : Même mourant, vous répondez présent.
the word répondez is detected as error, while it's a conjugation of the verb répondre
projections is not detected as plural of projection.

We aren't doing suffix stripping in a way that is compliant with Hunspell. Relevant dict entries:

répondre/tA
projection/S.

And a subset of the relevant parts of the affix file:

FLAG long

SFX S. Y 2
SFX S. 0 0/L'D'Q' [^sxz]
SFX S. 0 s/D'Q' [^sxz]

SFX tA Y 44
SFX tA re re/n'q'd'l'm't's' [dp]re
SFX tA re ant/n'q'd'l'm't's' [dp]re
SFX tA re ons/n'l't' [dp]re
...
SFX tA re ez/n'l'm' [dp]re

REP ^l l'
REP ^d d'
REP ^n n'
REP ^s s'
REP ^j j'
REP ^m m'
REP ^t t'
REP ^c c'

Note that the suffixes listed here add further affixes, which is likely the source of the problem. This will unfortunately probably need lazy checking to work (#92).