Add libcap-dev dependency for travis and debian packages
Link to libcap to determine process capabilities

This lets us know whether the debugger attach check is failing because
we don't have CAP_SYS_PTRACE or because there really is another
debugger attached already.
* use the same json token parsing function everywhere
* cleanup now un-used functions in jsonc_missing
* minor function naming cleanup in mod.c
* add missing prototype to mod.h
Helpful if it's info so it shows up in the main log
Formatting in mysql driver
Fixup mysql driver script to work with libmysqlclient >= 5.6
Process the *expanded* check items for rlm_files
Fix assumption in radius_compare_vps that the check item is always a string (oops)
Formatting
Cleanup formatting in radiusd.c
Tie "originate coa" into the session-state handler

any state added by originate-coa will be available to the next
Access-Request.
Fixed potential null pointer dereferences
Removed some redundant not-null checks
Updated a check in cbtls_msg

The check does exactly the same thing as before, but this silences a cppcheck warning.
Remove old example
Merge pull request #828 from herwinw/cppcheck_possible_null_pointer_dereferences

Cppcheck possible null pointer dereferences
Fix printing of tmpl_num in tmpl_prints
Split apart some integer tests
Return string 0 for &Attr[#] where no attributes exist
Add test for paircmp