Log Message:
Changes 3.2.3:

New features and improvements
* Added support for compiler option -gsplit-dwarf.

Bug fixes
* Support external zlib in nonstandard directory.
* Avoid calling exit() inside an exit handler.
* Let exit handler terminate properly.
* Bail out on compiler option --save-temps in addition to -save-temps.
* Only log "Disabling direct mode" once when failing to read potential \ 
include files.