Update Copyright years for files modified in 2010.

Makefile.def

Makefile.in

Makefile.tpl

contrib/compare-debug

fixincludes/Makefile.in

gcc/addresses.h

gcc/alias.h

gcc/alloc-pool.c

gcc/bitmap.c

gcc/bitmap.h

gcc/bt-load.c

gcc/builtin-attrs.def

gcc/builtin-types.def

gcc/c-config-lang.in

gcc/c-family/c-common.def

gcc/c-family/c-dump.c

gcc/c-family/c-ppoutput.c

gcc/c-family/c-pretty-print.h

gcc/c-lang.h

gcc/cfghooks.c