* dwarfdump.c: Change // comments to /* */ comments.
* makename.c: Delete blank line and trailing space. Add cast
so gcc -ansi compiles without complaint.
* print_die.c, uri.c: Change // comments to /* */ comments.
* tag_attr.c: Add getopt.h include so gcc -ansi compiles
without complaint.
* tag_tree.c: Add getopt.h and string.h include so gcc -ansi compiles
without complaint. Add cast so strdup call to avoid warning.
* addr_map.c: Add cast so strdup call does not cause warning gcc -ansi.
