Fixed Makefile.
Changed code to comply with style(9).
Some cleanup.
Check all PT_NOTE headers until one that has feature control note has been found.
Updated copyright notices.
Get rid of control features that haven't been implemented yet (they are in review). Get rid of all mentions/examples of it.

Move the operation validation to service side

Implemented a version for WITH_CASPER not defined.
Added a flag variable for stating which operations are allowed (FA_OPEN and FA_LSTAT).
Cache holds both fd and stat now but it's only filled if the operation is allowed.
fileargs_open takes the cache whereas fileargs_lstat doesn't, it just copies so the cache is correct until someone opens it.

Assess review comments

I don't think I considered using Dwarf_Loc instead of Dwarf_Locdesc. It made more sense to show it per Dwarf_Loc like you said so I converted to that.

Added a man page

Fix style issues

Merge both of the old diffs

Get rid of extra semicolon

Merged both of the diffs

Fix the style based on the comments