Jains now consider themselves a subset of Hinduism.
Buddhism however, despite all attempts by Hindus to denote the Buddha as a God, would not be subsumed into Hinduism.
That's the 20 second answer... if you want a better answer see "Brahmanism,Buddhism & Hinduism" by Lal Mani Joshi.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine