* Disallow compression pointers in names as we are not
reading from a packet and as a result length checks fail.
* Increase totext buffer size as fuzzer ran out of space on
big bitmaps.
* NUL terminate totext to make fault diagnosis easier.
* Add debugging messages to make fault diagnosie easier.
In this commit, the simple fuzzing tests for the isc_lex_gettoken() and
isc_lex_getmastertoken() functions have been added.
As part of this commit, the initialization has been moved from fuzz.h
constructor/destructor to LLVMFuzzerInitialize() in each fuzz test. The
main.c of no-fuzzing and AFL modes have been modified to run the
LLVMFuzzerInitialize() at the start of the main() function mimicking
the libfuzzer mode of operation.