Design compile time api hs_compile_lit() and hs_compile_lit_multi()
to handle pure literal pattern sets. Corresponding option --literal-on
is added for hyperscan testing suites. Extended parameters and part of
flags are not supported for this api.
hscheck accepts a file of regular expressions in the form:
ID:/regex/flags
and tests whether they can be compiled with Hyperscan, reporting the
error if compilation fails.
