Use .config file for default_proc_names

[bartoszek]

Instead of hard coding interesting proc names, we could have a config file /etc/progress.conf holding them.

progress/progress.c

Lines 60 to 68 in 092a650

	char *default_proc_names[] = {"cp", "mv", "dd", "tar", "cat", "rsync",
	"grep", "fgrep", "egrep", "cut", "sort", "md5sum", "sha1sum",
	"sha224sum", "sha256sum", "sha384sum", "sha512sum", "adb",
	"gzip", "gunzip", "bzip2", "bunzip2", "xz", "unxz", "lzma", "unlzma", "7z", "7za",
	"zcat", "bzcat", "lzcat",
	"split",
	"gpg",
	NULL
	};

[Tatsh]

Would be interested in this, as well as a ~/.config/progressrc or similar file.