zscanner: move to libzscanner

.gitignore

Doxyfile.in

Knot.files

Knot.includes

Makefile.am

configure.ac

scripts/update-parser.sh

src/Makefile.am

src/knot/ctl/commands.c

src/knot/zone/zonefile.h

src/libzscanner/Makefile.am

src/libzscanner/NOTES

src/libzscanner/error.c

src/libzscanner/error.h

src/libzscanner/functions.c

src/libzscanner/functions.h

src/libzscanner/libzscanner.pc.in

src/libzscanner/scanner.c.g2

src/libzscanner/scanner.c.t0

src/libzscanner/scanner.h