some work on writing options to sln/suo file
some work on writing options to sln/suo file

git-svn-id: 64365f70c8010154e3943f9c95c0f2815ed39039@225 a09178c5-0f50-412e-aa4a-0aec1a98dccb

denis-sh/visuald,denis-sh/visuald,denis-sh/visuald,denis-sh/visuald