* gdb.c++/templates.exp: Replace "const &" with "const ?&",
making the whitespace optional. Also replace "(void) with
"((void|)), making the keyword "void" optional.
* gdb.c++/templates.exp (test_template_breakpoints): Change Britsh
spelling "cancelled" to U.S. spelling "canceled" to match changes
made to gdb.
* gdb.c++/ovldbreak.exp: Ditto.