Remove whitespace from end of lines

doc/src/sgml/maintenance.sgml

doc/src/sgml/ref/create_table.sgml

doc/src/sgml/ref/notify.sgml

doc/src/sgml/ref/pg_dump.sgml

src/Makefile.global.in

src/backend/catalog/system_views.sql

src/test/regress/expected/json.out

src/test/regress/sql/json.sql

src/tools/msvc/Mkvcbuild.pm

src/tools/pgindent/perltidyrc

src/tools/pgindent/pgindent

src/tools/pgindent/pgindent.man