i#1551 port to ARM: predicated SIMD/FP, part 1: types + opcodes

Add new decoding types and opcodes for all of the predicated SIMD/FP
instructions.  Updates the type name and other locations.

Adds new register DR_REG_FPSCR and updates the reg arrays.

Adds various notes and comments for later improvements.

git-svn-id: https://dynamorio.googlecode.com/svn/trunk@2925 49cc7528-f6fd-11dd-9d1a-b59b2e1864b6