[IMP] use boolean coertion in eval_bool instead of a ternary operator
[IMP] use boolean coertion in eval_bool instead of a ternary operator

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extra : convert_revision : xmo%40openerp.com-20110310113257-gymk9myprptfaggj

splbio/openerp-web,vnc-biz/openerp-web,gisce/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web