Edits applied to Weir and Cockerham Fst function to allow calculations on multiallelic sites

git-svn-id: https://svn.code.sf.net/p/vcftools/code@892 19d466ce-640d-45be-954f-fad4d9839663
Removed hapmap fst function

git-svn-id: https://svn.code.sf.net/p/vcftools/code@893 19d466ce-640d-45be-954f-fad4d9839663
Removed hapmap fst function

git-svn-id: https://svn.code.sf.net/p/vcftools/code@894 19d466ce-640d-45be-954f-fad4d9839663
Fix for small parameter handling bug

git-svn-id: https://svn.code.sf.net/p/vcftools/code@895 19d466ce-640d-45be-954f-fad4d9839663
Merge remote-tracking branch 'upstream'