Add function SgBoardColorChar; add unit tests for SgBoardColorChar, SgOpp, SgEBW

git-svn-id: svn://svn.code.sf.net/p/fuego/code/trunk@1929 2e953b5c-c64d-0410-be54-f773e93e544c
SgRect: Add method IncludeXY; add unit tests for Include, IncludeXY

git-svn-id: svn://svn.code.sf.net/p/fuego/code/trunk@1930 2e953b5c-c64d-0410-be54-f773e93e544c