Print a message if we do not have the ability to uncompress a gzip
image. Before, u-boot would just assume the routines were available

Signed-off-by: Matthew McClintock <msm@freescale.com>

Most of the files have U_BOOT_CMD on a separate line,
but a few didn't and had the first line on the same line
as U_BOOT_CMD.

This changes these files by adding a line break and a tab

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>

The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands.  Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".

This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:

int main (int argc, char **argv)
{
	while (--argc > 0 && **++argv == '-') {
/* ====> */	while (*++*argv) {
			switch (**argv) {
			case 'd':
				debug++;
				break;
			...
			default:
				usage ();
			}
		}
	}
	...
}

The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell.  With the modification, the compiler will prevent this with
an
	error: increment of read-only location '*argv'

N.B.: The code above can be trivially rewritten like this:

	while (--argc > 0 && **++argv == '-') {
		char *arg = *argv;
		while (*++arg) {
			switch (*arg) {
			...

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>

Coding style cleanup, update CHANGELOG.

Signed-off-by: Wolfgang Denk <wd@denx.de>

Fix compile error:

	cmd_ximg.c: In function 'do_imgextract':
	cmd_ximg.c:234: error: 'i' undeclared (first use in this function)
	cmd_ximg.c:234: error: (Each undeclared identifier is reported only once
	cmd_ximg.c:234: error: for each function it appears in.)

Signed-off-by: Wolfgang Denk <wd@denx.de>

imxtract currently can not handle compressed images. This patch adds
handling for bzip2 and zip compression. In both cases, a destination
address has to be specified for extraction.

Signed-off-by: Wolfgang Wegner <w.wegner@astro-kom.de>

Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>

Remove command name from all command "usage" fields and update
common/command.c to display "name - usage" instead of
just "usage". Also remove newlines from command usage fields.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

As suggested by Wolfgang Denk:
- image printing functions:
  - remove wrappers
  - remove indentation prefix from functions' signatures
- merge getenv_verify and getenv_autostart into one parametrized function

Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>

Fix imxtract command not being compiled-in despite CONFIG_CMD_XIMG being in
include/config_cmd_default.h. Fix few warnings and handling of new format
images.

Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>