Removed struct name

Changed
	typedef struct foo { } foo__t;

to

	typedef struct {} foo__t;

since I never use the struct foo usage in the code.
Removed ipaclraw_head__t

It clutters the code and it's not really needed.  I'm simplifying things here.
Renamed structures

I removed the raw portion from the structure names---since there's not byte
swizzling going on, there's no difference between the "wire" format and the
"memory" format.  Also, I renamed ipaclraw__t to ipaclreq__t to better
reflect what it is.
Fixed some typos.
Merge tag 'v0.3'

Development