doc: howto-compile-linux: Revise

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
website: News: Add v0.7.13
website: News: Add v0.9.0

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
website: Uncomment 0.9 related text

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
doc: howto-compile-linux: Export DEST to be safe

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>