Bump copyright date to 2019

LICENSE

Makefile.am

acinclude.m4

configure.ac

scripts/codegen/gen_server_ciphers.py

scripts/codegen/get_mozilla_ciphers.py

scripts/codegen/makedesc.py

scripts/maint/annotate_ifdef_directives

scripts/maint/format_changelog.py

scripts/maint/redox.py

scripts/maint/sortChanges.py

src/app/config/config.c

src/app/config/config.h

src/app/config/confparse.c

src/app/config/confparse.h

src/app/config/or_options_st.h

src/app/config/or_state_st.h

src/app/config/statefile.c

src/app/config/statefile.h

src/app/main/main.c