Fix for %c in sprintf/sscanf. Rev: src/bignum.h:1.9 Rev: src/modules/Gmp/mpz_glue.c:1.59 Rev: src/modules/sprintf/sprintf.c:1.56 Rev: src/modules/sprintf/testsuite.in:1.23 Rev: src/opcodes.c:1.53 Rev: src/testsuite.in:1.211