check for duplicated stack addresses

Based on https://code.google.com/p/jpcsp/source/detail?r=3569

Fix WWE SmackDown! vs. RAW 2006
Fix save status

Rename u32_le stackAddr to u32
fix bracing
small test.py update

Mention PPSSPPHeadless should be better
Merge pull request #6757 from sum2012/patch-2

small test.py update
For some reason x86 was compiling ArmEmitter
Merge pull request #6722 from sum2012/wwe

check for duplicated stack addresses by JimLee168