improved error messaging for icons.tbl

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9883 387891d4-d844-0410-90c0-e4c51a9137d3
change strcpy to strcpy_s (left over from r9832)

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9884 387891d4-d844-0410-90c0-e4c51a9137d3
change the ship struct to a class, and remove use of memcpy and memset for setting/copying the entire ship class

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9885 387891d4-d844-0410-90c0-e4c51a9137d3
fix declaration

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9886 387891d4-d844-0410-90c0-e4c51a9137d3