Cleaned a lot of old code (some even from 1.x times)
#define GDTH_INITFUNC(type, func)       type __init func 

that MODULE_ macros are defined empty on !MODULE


Around line 4100, comment: /* scanning for PCI controllers */
I didn't reindent on purpose, needs Lindent anyway.

This patch makes gdth.c 20k shorter, Lindent would make it another 30k
shorter.