Saúl Ibarra Corretgé 5f2fb55994 Port Bellard's register-based regexp engine ...

Replace quickjs-ng's stack-based libregexp with Fabrice Bellard's
register-based backtracking engine, which
is faster and guarantees linear bytecode size growth. This also brings the
regexp implementation to full parity with upstream: v flag, regexp modifiers,
duplicate named capture groups, properties of strings, and Script=Unknown.

Includes the following upstream commits from bellard/quickjs:
  7ab2341  faster and simpler implementation of regexp backtracking
  a774007  removed buffer overflows introduced in regexp optimizations
  371c06e  ensure regexp bytecode size grows linearly with the input
  47aac8b  regexp: a set of registers instead of an auxiliary stack
  5907aa6  added missing lre_poll_timeout()
  f113949  removed alloca() in lre_exec(); \s/\S opcodes; optimized \b/\B
  7bd1ae2  \x{N} is a syntax error
  24379bf  added regexp duplicate named groups; fixed reset of captures
  f95b8ba  added regexp modifiers
  d7cdfdc  regexp: added v flag support; CR_OP_SUB + properties of strings
  fc524f7  added missing 'Unknown' unicode Script

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..

function_source.c

Port Bellard's register-based regexp engine

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hello_module.c

Port Bellard's register-based regexp engine

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hello.c

Port Bellard's register-based regexp engine

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repl.c

Port Bellard's register-based regexp engine

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standalone.c

Port Bellard's register-based regexp engine

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test_fib.c

Port Bellard's register-based regexp engine

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