convert README to markdown

This makes it more readable on the github page, since github expects
README to be in markdown format.
variablize strip command and add --keep-file-symbols

We need to keep the file symbols around for add-patches-section
and link-vmlinux-syms to resolve ambigous symbols in vmlinux.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Merge pull request #11 from jpoimboe/readme-markdown

convert README to markdown
retain source tree directory structure with objects

The source tree directory structure should be maintained
in the TEMPDIR while building the hotpatch module so that
changed objects in different directories with the same
name don't collide during the build process.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Merge pull request #13 from spartacus06/fixes

Fixes