Update the copyright header of various files...

Update the copyright header of various files...

... to follow the correct syntax (according to the gospel of
gnulib's update-copyright). In other words:
  - no comma after the last year;
  - FSF spelled exactly "Free Software Foundation, Inc.", with
    the comma and the period at the end.

sim/common/ChangeLog:

	* dv-sockser.h, sim-assert.h, sim-fpu.c: Reformat the copyright
	header.

sim/m32c/ChangeLog:

	* blinky.S, gloss.S, sample.S: Reformat copyright header.

sim/mn10300/ChangeLog:

	* sim-main.h: Reformat copyright header.

sim/ppc/ChangeLog:

	* dp-bit.c: Reformat copyright header.

gdb/ChangeLog:

        * gdb/common/gdb_thread_db.h, gdb/dbxread.c, gdb/environ.c,
        gdb/gcore.h, gdb/rs6000-tdep.h, gdb/s390-nat.c, gdb/tic6x-tdep.c:
        Reformat the copyright header.

gdb/gdbserver/ChangeLog:

	* terminal.h: Reformat copyright header.

gdb/testsuite/ChangeLog:

	* dg-extract-results.sh, gdb.arch/gcore.c, gdb.arch/gdb1558.c,
	gdb.arch/i386-gnu-cfi.c, gdb.base/complex.c, gdb.base/cvexpr.c,
	gdb.base/gcore.c, gdb.base/gdb1555-main.c, gdb.base/gdb1555.c,
	gdb.base/gdb1821.c, gdb.base/long_long.c, gdb.base/restore.c,
	gdb.base/sepdebug.c, gdb.base/type-opaque-lib.c,
	gdb.base/type-opaque-main.c, gdb.cp/maint.exp, gdb.cp/namespace1.cc,
	gdb.cp/pr9631.cc, gdb.cp/psmang1.cc, gdb.cp/psmang2.cc,
	gdb.cp/try_catch.cc, gdb.cp/virtfunc.cc, gdb.hp/gdb.base-hp/reg.exp,
	gdb.mi/basics.c, gdb.mi/mi-stack.c, gdb.mi/mi-var-child.c,
	gdb.mi/mi2-var-child.exp, gdb.mi/var-cmd.c,
	gdb.threads/thread_check.c: Reformat copyright header.