Remove superfluous semicolons from testsuite throughout.

A few months ago semicolons after "return" were removed throughout the
testsuite.  However, as I pointed out in review, they're unnecessary
not just after "return", but pretty much after any tcl command.  ';'
is the command separator, and you only need it if there's another
command on the same line afterwards.

This patch was written by running:

 $ find . -name "*.exp" | xargs grep -l ";\s*$" | xargs sed -i 's/\([^#][^\s*;]*\)\s*;\s*$/\1/'

and then undoing changes to comments, and lib/future.exp.

Tested on x86_64 Fedora 17.

gdb/testsuite/
2013-06-07  Pedro Alves  <palves@redhat.com>

	* boards/native-extended-gdbserver.exp: Remove semicolon.
	* config/arm-ice.exp: Likewise.
	* config/bfin.exp: Likewise.
	* config/cygmon.exp: Likewise.
	* config/h8300.exp: Likewise.
	* config/monitor.exp: Likewise.
	* config/sid.exp: Likewise.
	* config/sim.exp: Likewise.
	* config/slite.exp: Likewise.
	* config/vx.exp: Likewise.
	* gdb.arch/i386-bp_permanent.exp: Likewise.
	* gdb.asm/asm-source.exp: Likewise.
	* gdb.base/args.exp: Likewise.
	* gdb.base/attach-pie-misread.exp: Likewise.
	* gdb.base/auxv.exp: Likewise.
	* gdb.base/bigcore.exp: Likewise.
	* gdb.base/bitfields2.exp: Likewise.
	* gdb.base/bitfields.exp: Likewise.
	* gdb.base/break.exp: Likewise.
	* gdb.base/break-interp.exp: Likewise.
	* gdb.base/callfuncs.exp: Likewise.
	* gdb.base/call-sc.exp: Likewise.
	* gdb.base/commands.exp: Likewise.
	* gdb.base/corefile.exp: Likewise.
	* gdb.base/dbx.exp: Likewise.
	* gdb.base/ending-run.exp: Likewise.
	* gdb.base/exprs.exp: Likewise.
	* gdb.base/funcargs.exp: Likewise.
	* gdb.base/hbreak2.exp: Likewise.
	* gdb.base/huge.exp: Likewise.
	* gdb.base/list.exp: Likewise.
	* gdb.base/memattr.exp: Likewise.
	* gdb.base/overlays.exp: Likewise.
	* gdb.base/printcmds.exp: Likewise.
	* gdb.base/recurse.exp: Likewise.
	* gdb.base/remotetimeout.exp: Likewise.
	* gdb.base/reread.exp: Likewise.
	* gdb.base/savedregs.exp: Likewise.
	* gdb.base/scope.exp: Likewise.
	* gdb.base/sepdebug.exp: Likewise.
	* gdb.base/setshow.exp: Likewise.
	* gdb.base/setvar.exp: Likewise.
	* gdb.base/sigaltstack.exp: Likewise.
	* gdb.base/siginfo-addr.exp: Likewise.
	* gdb.base/siginfo.exp: Likewise.
	* gdb.base/siginfo-obj.exp: Likewise.
	* gdb.base/sigrepeat.exp: Likewise.
	* gdb.base/sigstep.exp: Likewise.
	* gdb.base/structs.exp: Likewise.
	* gdb.base/testenv.exp: Likewise.
	* gdb.base/twice.exp: Likewise.
	* gdb.base/valgrind-db-attach.exp: Likewise.
	* gdb.base/valgrind-infcall.exp: Likewise.
	* gdb.base/varargs.exp: Likewise.
	* gdb.base/watchpoint.exp: Likewise.
	* gdb.cp/gdb1355.exp: Likewise.
	* gdb.cp/misc.exp: Likewise.
	* gdb.disasm/hppa.exp: Likewise.
	* gdb.disasm/t01_mov.exp: Likewise.
	* gdb.disasm/t02_mova.exp: Likewise.
	* gdb.disasm/t03_add.exp: Likewise.
	* gdb.disasm/t04_sub.exp: Likewise.
	* gdb.disasm/t05_cmp.exp: Likewise.
	* gdb.disasm/t06_ari2.exp: Likewise.
	* gdb.disasm/t07_ari3.exp: Likewise.
	* gdb.disasm/t08_or.exp: Likewise.
	* gdb.disasm/t09_xor.exp: Likewise.
	* gdb.disasm/t10_and.exp: Likewise.
	* gdb.disasm/t11_logs.exp: Likewise.
	* gdb.disasm/t12_bit.exp: Likewise.
	* gdb.disasm/t13_otr.exp: Likewise.
	* gdb.gdb/selftest.exp: Likewise.
	* gdb.hp/gdb.base-hp/callfwmall.exp: Likewise.
	* gdb.mi/mi-reverse.exp: Likewise.
	* gdb.pascal/floats.exp: Likewise.
	* gdb.python/py-inferior.exp: Likewise.
	* gdb.threads/attach-into-signal.exp: Likewise.
	* gdb.threads/pthreads.exp: Likewise.
	* gdb.threads/thread_events.exp: Likewise.
	* gdb.threads/watchthreads.exp: Likewise.
	* gdb.trace/actions-changed.exp: Likewise.
	* gdb.trace/actions.exp: Likewise.
	* gdb.trace/ax.exp: Likewise.
	* gdb.trace/backtrace.exp: Likewise.
	* gdb.trace/change-loc.exp: Likewise.
	* gdb.trace/deltrace.exp: Likewise.
	* gdb.trace/disconnected-tracing.exp: Likewise.
	* gdb.trace/ftrace.exp: Likewise.
	* gdb.trace/infotrace.exp: Likewise.
	* gdb.trace/passc-dyn.exp: Likewise.
	* gdb.trace/passcount.exp: Likewise.
	* gdb.trace/pending.exp: Likewise.
	* gdb.trace/qtro.exp: Likewise.
	* gdb.trace/range-stepping.exp: Likewise.
	* gdb.trace/report.exp: Likewise.
	* gdb.trace/save-trace.exp: Likewise.
	* gdb.trace/status-stop.exp: Likewise.
	* gdb.trace/strace.exp: Likewise.
	* gdb.trace/tfile.exp: Likewise.
	* gdb.trace/tfind.exp: Likewise.
	* gdb.trace/trace-break.exp: Likewise.
	* gdb.trace/tracecmd.exp: Likewise.
	* gdb.trace/trace-mt.exp: Likewise.
	* gdb.trace/tspeed.exp: Likewise.
	* gdb.trace/tsv.exp: Likewise.
	* gdb.trace/while-stepping.exp: Likewise.
	* lib/gdb.exp: Likewise.
	* lib/gdbserver-support.exp: Likewise.
	* lib/java.exp: Likewise.
	* lib/mi-support.exp: Likewise.
	* lib/pascal.exp: Likewise.
	* lib/prompt.exp: Likewise.
	* lib/trace-support.exp: Likewise.