Run all users meeting frequency count experiments

The programs runs for 27 hours.
	new file:   topk_freq_all.txt
Merge branch 'master' of github.com:thekingofkings/gowalla-exp

Conflicts:
	src/probRela/CaseFinder.java
	src/probRela/Tracker.java

	The writeLocationEntropy() is modified and merged.