[MacPorts] #59927: bison: update to 3.8

[MacPorts]

#59927: bison: update to 3.8
------------------------+----------------------
  Reporter:  ballapete  |      Owner:  mascguy
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.2
Resolution:             |   Keywords:
      Port:  bison      |
------------------------+----------------------

Comment (by mascguy):

 Test compilation is now failing with the following:

 {{{
 $ sudo make check-examples
 /usr/bin/gcc-4.2 -std=gnu99 -DEXEEXT=\"\"   -I./examples/c/glr
 -I./examples/c/glr -I/opt/local/include    -pipe -Os -arch ppc -MT
 examples/c/glr/examples_c_glr_c___types-c++-types.o -MD -MP -MF
 examples/c/glr/.deps/examples_c_glr_c___types-c++-types.Tpo -c -o
 examples/c/glr/examples_c_glr_c___types-c++-types.o `test -f
 'examples/c/glr/c++-types.c' || echo './'`examples/c/glr/c++-types.c
 examples/c/glr/c++-types.c:762: error: expected '=', ',', ';', 'asm' or
 '__attribute__' before 'static'
 examples/c/glr/c++-types.c:770: error: expected '=', ',', ';', 'asm' or
 '__attribute__' before 'static'
 examples/c/glr/c++-types.c: In function 'yyexpandGLRStack':
 examples/c/glr/c++-types.c:1507: warning: implicit declaration of function
 'yyMemoryExhausted'
 examples/c/glr/c++-types.c: In function 'yyrecoverSyntaxError':
 examples/c/glr/c++-types.c:2574: warning: implicit declaration of function
 'yyFail'
 make: *** [examples/c/glr/examples_c_glr_c___types-c++-types.o] Error 1
 }}}

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Ticket URL: <https://trac.macports.org/ticket/59927#comment:59>
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