v0.16.2.4 — Linux builds prefer clang; long long bind fix; pinned fet…

…ched dependencies

v0.16.2.3 — README: clone master for stable release

v0.16.2.2: c_lib SQLite with FKs on by default; prebuilt c_lib; build…

…-time version

- Link c_lib's diskerror_sqlite3 (foreign keys default ON);
  -DRAGGER_SYSTEM_SQLITE=ON for the system library
- Refuse to run if PRAGMA foreign_keys is not actually on after open
- Link c_lib's prebuilt libraries from ../c_lib/build (GitHub fallback)
- Version/commit/date generated at build time (build_info.cpp)
- System sqlite3 dev package no longer required

Fixed embeddor list from LM Studio.

Streamlining of SQL.

Altered stop-words. Refactoring. Changed Porter to Snowball.

Replace SQLite FTS5 with a custom TF-IDF inverted index.

Both FTS5 layers (text + phonetic) and the phon sidecar column are gone,
replaced by a flat terms table plus per-table junction tables holding
stemmed literals and DoubleMetaphone codes. Live df, tunable weights.
db_version 0.16; migration rebuilds text tables in canonical column order.

Much code cleanup.

New DB schema.

bug fixes