* gdb.cp/exception.cc: Change <iostream.h> to <iostream>.
* gdb.cp/exception.exp: Use gdb test, gdb_test_multiple.
Use gdb_compile. Remove restriction on gcc. Add some patterns
for recent version of gdb. Delete second half, which was a copy
of the first half with different build flags. This test is
still disabled because it is still not ready for production.
* gdb.cp/exception.cc: Add copyright notice.
* gdb.cp/exception.exp: Add a notice that this file is broken
because of line number changes caused by addition of copyright
notice.
