New version of the ahocorasick library (#1200)

The new version is about 25% faster with -O2 and 45% faster with -O3.
No recursion is used (smaller stack size required).
Uses less memory (by valgrind info)
 bigram:
  - original 1796 allocs,   247864 bytes allocated
  - new      1232 allocs,   158880 bytes allocated
 host_match:
  - original 18038 allocs, 3004576 bytes allocated
  - new       6861 allocs,  396624 bytes allocated

The function ac_automata_search() is thread safe.
Optional case-insensitive comparison.
Matching at the beginning and at the end of the string is supported.
One code file and one header file.

0 files changed, 0 insertions, 0 deletions