Update instructions for ubuntu (work in progress)

Signed-off-by: David Scott <dave.scott@citrix.com>
'linaro' is a Debian-like distribution

Signed-off-by: David Scott <dave.scott@citrix.com>
configure: detect 'Linaro' as Debian-like

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #426 from djs55/linaro

'linaro' is a Debian-like distribution
We use cowbuilder not pbuilder

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #424 from djs55/update-instructions

Update instructions for ubuntu (work in progress)
Update Debian build instructions to mention Debian Jessie
Makefile: Create repository metadata in SRPMS

This is needed to make yum-builddep work.

Signed-off-by: Euan Harris <euan.harris@citrix.com>