1) I updated the build and install notes for release 1.9.0.

2) I added a configure test for isfinite since it doesn't exist in the
   MIPSpro 7.41 and gcc 3.2 compilers. I then modified the files that use
   isfinite to do so conditionally. This means that the test won't be done
   on those systems but I don't know a work around.

3) I added a "using std::find;" to one of the Flash database plugin source
   files to get VisIt to build with the MIPSpro 7.41 compiler.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@3799 18c085ea-50e0-402c-830e-de6fd14e8384