MDEV-25633 MariaDB crashes when compiled with link time optimizations

don't force -static-libgcc in gcc builds

gcc can decide automatically if it's needed.
forcing static libgcc breaks lto.

cmake/build_configurations/mysql_release.cmake

@@ -183,12 +183,12 @@ IF(UNIX)
 
   # Default GCC flags
   IF(CMAKE_COMPILER_IS_GNUCC)
-    SET(COMMON_C_FLAGS               "-g -static-libgcc -fno-omit-frame-pointer -fno-strict-aliasing  -Wno-uninitialized")
+    SET(COMMON_C_FLAGS               "-g -fno-omit-frame-pointer -fno-strict-aliasing  -Wno-uninitialized")
     SET(CMAKE_C_FLAGS_DEBUG          "-O ${COMMON_C_FLAGS}")
     SET(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 ${COMMON_C_FLAGS}")
   ENDIF()
   IF(CMAKE_COMPILER_IS_GNUCXX)
-    SET(COMMON_CXX_FLAGS               "-g -static-libgcc -fno-omit-frame-pointer -fno-strict-aliasing -Wno-uninitialized")
+    SET(COMMON_CXX_FLAGS               "-g -fno-omit-frame-pointer -fno-strict-aliasing -Wno-uninitialized")
     SET(CMAKE_CXX_FLAGS_DEBUG          "-O ${COMMON_CXX_FLAGS}")
     SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 ${COMMON_CXX_FLAGS}")
   ENDIF()