Hindu and Hindutva

Hindutva: As per Sanskrit grammar, the 'tva' pratyaya (suffix) indicates 'being' so 'Hindu-tva' is simply being a Hindu like 'Matrutva' is being a mother. But who is a Hindu? 

For that I like to start with Veer Savarkar's definition of a Hindu. Savarkar defines a 'Hindu' thus:

 आसिंधु सिंधु पर्यन्ता यस्य भारतभूमिका ।
 पितृभू: पुण्यभूश्चैव स वै हिंदुरिति स्मृत: ॥ 

"Everyone who regards and claims this Bharat bhoomi from the Indus to the seas as their Pitrubhoomi (land of their Pitar or ancestors) and Punyabhoomi  (sacred land) - is a Hindu"

To the above, I would also add Matrubhoomi. Therefore, one who considers Bharat to be their Pitrubhoomi (land of ancestors), Punyabhoomi (sacred land) and Matrubhoomi (birthplace of their culture, tradition, language, ethos) is a Hindu.