20:10 dinoex 

- make fvwm compile w/o Warnings apart from one usage of mkstemp
 by adding needed #includes, adding return statements to
 non-void functions and declaring functions returning a int
 instead of void if they do return an return code.
- start using one central safemalloc.
- do not mangle pointers which makes FvwmWinList work on
  amd64/7-STABLE again.
PR:             132571
Submitted by:   Bjoern A. Zeeb