Firebird Adds an Optional Static fbclient — and Solves the Symbol-Collision Problem Properly

Firebird's client library, libfbclient / fbclient.dll, has always been distributed exclusively as a shared library. PR #9104 by Adriano dos Santos Fernandes, merged into the Firebird source tree on July 24, 2026, changes that: it introduces an optional, non-default static archive (libfbclient.a on POSIX, fbclient_static.lib on Windows) for applications that need to link the client library