add support for max_examples in VW for TLC
fixed order of checks in support for max examples for TLC
Merge github.com:JohnLangford/vowpal_wabbit
Merge github.com:JohnLangford/vowpal_wabbit
Merge github.com:JohnLangford/vowpal_wabbit
Merge github.com:JohnLangford/vowpal_wabbit
Merge pull request #127 from NiruC/master

added option to set max number of examples