Description of problem:
Cannot find any doc describing the use (supported image formats) 
of 'splashimage' config param.

How reproducible:
Always

Steps to Reproduce:
1.

[go@pc17 grub-0.90]$ grep splash /boot/grub/grub.conf
splashimage=(hd0,0)/grub/splash.xpm.gz
[go@pc17 grub-0.90]$ rpm -ql grub|xargs zgrep -i splash
/usr/share/grub/i386-redhat/stage2:Binary file (standard input) matches
[go@pc17 grub-0.90]$	


Actual Results:  No doc talks about the image formats that are ok 
for 'splashimage'

Expected Results:  'info grub' should explain every config param you can 
use in grub.conf

Additional info:

About docs, you should rename /usr/share/doc/grub*/mesu.lst to grub.conf 
too, as you did for the main config file.

Also, is this normal:
[go@pc17 go]$ cp /boot/grub/splash.xpm.gz .
[go@pc17 go]$ gunzip splash.xpm.gz
[go@pc17 go]$ file splash.xpm
splash.xpm: X pixmap image text
[go@pc17 go]$ /usr/bin/xpmtoppm splash.xpm > file1
xpmtoppm: EOF or read error on input file
[go@pc17 go]$ /usr/bin/xpmtoppm --verbose splash.xpm
xpmtoppm: Width x Height:  640 x 480
xpmtoppm: no. of colors:  15
xpmtoppm: chars per pixel:  1
xpmtoppm: EOF or read error on input file
[go@pc17 go]$