[Crash-utility] crash version 4.0-4.4 is available

- Fix for kernels in which the irq_desc_t typedef is not included in the vmlinux debuginfo data, by using the 2.6-era struct irq_desc. Without the patch, the "irq" command fails with the error message, "irq: cannot determine size of irq_desc_t". (hugh(a)mimosa.com) - Implemented new "irq -u" option that displays only in-use IRQs, now that there can be several thousand entries in the irq_desc[] array. (anderson(a)redhat.com) - Prevent occasional 99% cpu usage waiting for the built-in less command to complete. (anderson(a)redhat.com) - Implemented support for the use of "kerntypes" debuginfo files that are created by the LKCD "dwarfextract" utility, as an alternative to the use of the vmlinux file. This requires the use of the matching System.map file, as in this example: # crash kerntypes System.map [vmcore] This capability was written by Cliff Wickman of SGI, and he has generously offered to maintain its functionality. (cpw(a)sgi.com) - Fixes, code improvement and cleanup for "crash -h [command]". (hugh(a)mimosa.com) - The output of command data exceeding a terminal page-size has been traditionally fed by default to "/usr/bin/less -E -X" with a prompt; if the /usr/bin/less command was not available on the host system, output would be fed to "/bin/more" instead. Scrolling can be turned off with "set scroll off" or the built-in alias "sf", and back on with "set scroll on" or the built-in alias "sn". This release allows the user to specify an alternative scrolling program by creating a CRASHPAGER environment variable, which be used by default if it exists. Also, the "set scroll [arg]" internal variable setting command, which until now accepted "on" and "off" as arguments, now accepts "less", "more" and "CRASHPAGER" as alternative arguments, both during runtime, or in .crashrc files. Also, new crash command line arguments have also been added to override the default and/or .crashrc settings: --more, --less, and --CRASHPAGER. Lastly, the output of the "crash -h [command]" will also use the relevant scroll command selection. (anderson(a)redhat.com) - Updated crash(8) man page. (hugh(a)mimosa.com, anderson(a)redhat.com) Download from: http://people.redhat.com/anderson