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ccdbbc7fe4
Updating gnulib has caused -Wformat-signedness to be enabled. This has revealed many problems in C format strings. The fixes here fall into the following main categories: - Using %d with an unsigned parameter. - %x and %o expect an unsigned argument. - uid_t and gid_t are unsigned on Linux. The safe way to print these is to cast them to uintmax_t and then print them using the %ju modifier (see http://stackoverflow.com/a/1401581). - Using %d to print an enum. Since enums may be either char or int, I fixed this by casting the enum to int. - strtol_error & lzma_ret are both unsigned types.