Added trio-sscanf benchmark

    * configure: Regenerated
    * configure.ac: Added trio-sscanf benchmark
    * src/trio-sscanf/Makefile.am: Makefile.am for trio-sscanf
    * src/trio-sscanf/Makefile.in: Generated
    * src/trio-sscanf/trio.c: Library file for trio
    * src/trio-sscanf/trio.h: Library file for trio
    * src/trio-sscanf/trio_test.c: Benchmarking trio_sscanf
    * src/trio-sscanf/triodef.h: Library file for trio
    * src/trio-sscanf/triop.h: Library file for trio
    * src/trio-sscanf/triostr.c: Library file for trio
    * src/trio-sscanf/triostr.h: Library file for trio