[OE-core] Prepare recipes for automake-1.13 (batch 1 / v3)

[Marko Lindqvist]

Another round of Upstream-Status improvements.
- Use "Backport" where appropriate
- Use [additional info] instead of (additional info)
- Some new info (first fixed upstream pkg-config version etc)
- Added reason for "Inappropriate" statuses

Also fixed patch name in commit messages:
obsolete-automake-macros.patch -> obsolete_automake_macros.patch

 Dropped already accepted patches from the batch


 - ML