add more information about the nature of support of prefetch primops on none x86/AMD64 -fasm platforms (and -fvia)
to the 7.8 release notes

Signed-off-by: Austin Seipp <austin@well-typed.com>
fix sed expression in build dependencies rules to work well with non-GNU sed (fixes #8764)

The patch is provided by Christian Maeder <Christian.Maeder@dfki.de>

Signed-off-by: Karel Gardas <karel.gardas@centrum.cz>
Signed-off-by: Austin Seipp <austin@well-typed.com>
Switch on -dynamic-too with QuasiQuotes as well.

As pointed out by Albert Y. C. Lai on glasgow-haskell-users.

Signed-off-by: Austin Seipp <austin@well-typed.com>