ObjFW  Changes On Branch trunk

Changes In Branch trunk Excluding Merge-Ins

This is equivalent to a diff from 75e7375c66 to 75e7375c66

2024-07-21
16:41
platform.h: Add LoongArch 64 Leaf check-in: 75e7375c66 user: js tags: trunk
12:17
Fix ObjC++ with GCC check-in: cee78b6630 user: js tags: trunk