Silnik szachowy: Stockfish 17021506

Stockfish, silnik szachowy UCI

Lider listy JCER = 3406

馃敩 Autor: Joost VandeVondele

Timestamp: 1487135504 

Fix makefile: 32 bit builds without optimization. 
Fixes failing build for 

make ARCH=x86-32 clean && make ARCH=x86-32 optimize=no build 

by passing -m32 also to the link step. 

Extend travis testing accordingly. 

No functional change. 

Closes #999 

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