code cleanups, and no longer forcing unpinned ibt instructions into the placement queue.  we should put them in on demand if we find they aren't being placed.

Fixed several fields that were being left blank in header, as well as adding code to pad sections so that there is no gap betwee them.  this seems to be required by pe files.

code cleanups, updates to arm patcher to support tramoplining short-immediate instructions to out-of-band locations

Add padding sections to a zipr'd program where
the gap between two existing sections is greater
than a certain minimum boundary.

Removed bea engine from lots of inclue places and link steps, changed verbose mode for zipr to false, added very-verbose mode for zipr.  fixed a few zipr bugs related to non-existant fallthroughs, etc. 

Better EH verbose messages for zipr, stack stamping+EH support, a new cfar config (NOG+SS vrs NogOF+SS), as well as an IR refinement technique to do recursive-decent disassembly when a landing pad is not part of a function.

Added emt support for prefork+bilr+p1 (sketchy still), K6+NOG (seems stable with all xforms enabled).  I also did some peasoup/cfar fixes to support determunistic ID assignment for IRDB objects -- this was needed for marshaling because the EMT plugin uses ID matching to find identical objects (stack, scoop, instruction, etc.)  Next, I fixed bugs in p1transform where the p1.map wasn't getting proper IDs. Lastly, I added an option to zipr/elfwrite to disable bss-optimization, this was necessary for marshaling as that bss segments stay named/mapped to the binary and cannot be combined with other segments.