Update x86_64 bison package to 2.6.5

The previous package was broken (would often segfault, prevented
building Haiku cross-tools under x86_64), so update to the latest
version in HaikuPorts.

Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
makefile_engine: fix wording, rewrap, bump version, capitalize name.

* Improve wording, fix spelling errors, rewrap
* Capitalize name
* Adjust templates to match.

Fixes #11158.

Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>