Bug#37042308 Server code fails to compile on new Ubuntu24.10 platform

Bug#37046924 Server code fails to compile on new Fedora41 platform

RPM/DEB builds on Fedora/Ubuntu flags will add
   -flto=auto -ffat-lto-objects to CFLAGS
and this stripped away symbols from deflate.c

The fix is to remove -flto=xxx when building libzlib.a

Change-Id: I5906e788267bb976998e3fcb23c420478d8fc395

Author: Tor Didriksen

extra/zlib/CMakeLists.txt

@@ -34,6 +34,7 @@ ENDIF()
 
 IF(NOT WIN32)
   STRING_APPEND(CMAKE_C_FLAGS " -fvisibility=hidden")
+  REMOVE_CMAKE_COMPILER_FLAGS(CMAKE_C_FLAGS "${MY_COMPILER_FLAG_FLTO}")
 ENDIF()
 
 # Xcode >= 14 makes noise about sprintf, and loss of precision