* gdb.asm/asm-source.exp: Add tests for list, search, finish, return,
next, info source, info sources, info line, global and static
variables, and static functions.
* gdb.asm/common.inc: New macro gdbasm_datavar (default definition).
* gdb.asm/i386.inc: Override default definition of gdbasm_datavar.
* gdb.asm/asmsrc1.s: Add a static function and some variables.
* gdb.asm/asmsrc2.s: Make foo2 call foo3 twice (to test 'next').
* gdb.asm/d10v.inc (gdbasm_enter): Set up frame pointer.
(gdbasm_leave): Restore frame pointer.
(gdbasm_startup): Copy stack set-up from crt0.S.
