24 Aug.
-------
(changes from vivekk)
1. s3_64_asm.c  - copied directly from vivekk, to be reviewed
2. s3_64_bitblt.c - copied directly from vivekk, to be reviewed
3. s3_64_regs.c - 
					1. define for pixtrans window size.
					2. macro for programming the scissor registers.
					3. removed macro for checking against physical bounds.

4. s3_64_state.c -
					1. removed programming of the scissor registers.
					2. added macros for clipping against generic_state,
					   virtual bound, and phisical bounds.
					3. name of the transfer helper changed.
