Make bootable/kernel common

There's really no difference between each arch since the generated image
format is really just dependent on the bootloader's desires.
kernel: First pass at cleanup

Remove any recommendation of using modules, they're evil :)
Recommend use of u-boot tools for creating uImages.
Remove bootloaders section and bootloaders

Only MIPS had any information and only for COLO.
There's many many different bootloaders and methods for getting to the
point where Linux can run depending on arch, board, and user desires.
Later, we'll move a quick bit of info about picking a bootloader to the
"bootable" section after building the kernel.

Trying to document how to build every possible, even just the popular,
bootloaders, isn't reasonable.
patches.eng: Cleanup and remove useless comments
Don't obfuscate emails

The only ones present are for the license.  These are already published
all over the place, so there's no need to add obfuscation.
Shorten up the INSTALL file
Put README conversion info into INSTALL doc
INSTALL: Rename .md extension, format to markdown

For pretty rendering on places like github but which is still readable
in txt form.
Create top level README
Create top level LICENSE file

Containing the open publication license
license.xml: Remove open pub mailing list info

Not required or important.
Licenses: Update (C) date to start at 1999

First dated version of LFS I'm able to find.
Add bootloaders page to bootable section

Just list out popular bootloaders.  Telling how to configure each for
any desired target is not reasonable.
general.ent: Delete useless ENTITYs
Update changelog
Update date