Remove lint

macros into our namespace and limit use to headers.  A subsequent
round will add macros to separately handle forward declarations
of variables from declaration of function prototypes.  The last
round will add additional macros for declaring actual variables and
functions.

Most flags do nothing yet.

Parsing and printing of extensions in schema definitions.

See README 1.27 log

backout previous nt changes (actually, just don't include nt_svc.c)

that replace old static routines.

New error code for null string input.

Incorporate #define's per Kurt's suggestion

Provide human-readable errors.

Fix namespace contamination, some comments added.

Initial incomplete and broken version.