tools/parse.c, tools/parse.h, tools/misc.c, tools/misc.h: Moved
parts ov sexp-conv.c to separate files

Rev: src/nettle/tools/Makefile.am:1.3
Rev: src/nettle/tools/input.c:1.1
Rev: src/nettle/tools/input.h:1.1
Rev: src/nettle/tools/misc.c:1.1
Rev: src/nettle/tools/misc.h:1.1
Rev: src/nettle/tools/output.c:1.1
Rev: src/nettle/tools/output.h:1.1
Rev: src/nettle/tools/parse.c:1.1
Rev: src/nettle/tools/parse.h:1.1
Rev: src/nettle/tools/sexp-conv.c:1.13