J-Pilot 2.0.2 for Debian 12 (Bookworm)

Pre-built packages for Debian 12 (Bookworm) x86_64.

Includes:

• jpilot_2.0.2-1_amd64.deb — J-Pilot Palm OS desktop sync software
• pilot-link_0.12.5-1_amd64.deb — pilot-link Palm communications library (required)

Install pilot-link first, then J-Pilot:
sudo dpkg -i pilot-link_0.12.5-1_amd64.deb
sudo dpkg -i jpilot_2.0.2-1_amd64.deb

Built from source on Debian 12 Bookworm x86_64.
Sources: https://github.com/jichu4n/pilot-link and https://github.com/juddmon/jpilot

Debian 12 updated .deb packages

J-Pilot cannot be installed on Debian 12 via the packagecloud.io repository
referenced in the README — the repo is configured but contains no packages
for Debian 12 (Bookworm).

This PR adds two documentation files to the docs/ directory:

BUILDING_ON_DEBIAN12.md — complete build instructions for Debian 12,
including two patches required to fix configure.ac incompatibilities with
autoconf 2.71+. Pre-built .deb packages built using this process are
available at: https://github.com/ThaGuMath/jpilot/releases/tag/v2.0.2-debian12

UPSTREAM_ADVISORY_CONFIGURE_AC.md — a technical explanation of the two
configure.ac bugs (missing AC_BLUEZ macro and broken nested popt detection),
the minimal fixes applied, and recommendations for a proper upstream fix.

Tested on Debian 12 (Bookworm) x86_64 using a clean Docker container.