Build instructions for solaris
Changes to get build working for Solaris 11.1
Changes to get build working for Solaris 11.1
Restore makefile.unix in README.md.
Merged in jramstedt/primecoin-hp-solaris11.1 (pull request #3)

Changes to get build working for Solaris 11.1
Primecoin: Add Mac OS X icon
Primecoin: Update Mac Qt build info