PR 36313 Replace int with gfc_charlen_type, take 3

PR 36313 Replace int with gfc_charlen_type, take 3

Still some prototypes that didn't match the implementation.

2017-11-24  Janne Blomqvist  <jb@gcc.gnu.org>
        PR fortran/36313
        * m4/maxloc2s.m4: Replace int with gfc_charlen_type, take 3.
        * m4/minloc2s.m4: Likewise.
        * generated/maxloc2_16_s1.c: Regenerated.
        * generated/maxloc2_16_s4.c: Regenerated.
        * generated/maxloc2_4_s1.c: Regenerated.
        * generated/maxloc2_4_s4.c: Regenerated.
        * generated/maxloc2_8_s1.c: Regenerated.
        * generated/maxloc2_8_s4.c: Regenerated.
        * generated/minloc2_16_s1.c: Regenerated.
        * generated/minloc2_16_s4.c: Regenerated.
        * generated/minloc2_4_s1.c: Regenerated.
        * generated/minloc2_4_s4.c: Regenerated.
        * generated/minloc2_8_s1.c: Regenerated.
        * generated/minloc2_8_s4.c: Regenerated.

From-SVN: r255135