- hdlguide: added info about pulse rejection
- userguide: corrected channel delay when glitch filt enabled (40ns ->
  56 ns)
- changed firmware version in release top-level file

- shortened I2C section in i2c_slave UG
- enlarged read and write transfers in elma_i2c UG

- updated top-level file
- finished user guide doc

- renamed vme64x_i2c to elma_i2c
- continued modifications on ug-conv-ttl-blo

- created i2c_slave_pkg file with constant defs
- added blinking of I2C LED in top-level file
- pulse generation now according to specification

Also started making changes to release top file
following discussion with Erik.