pgsql: Tweak a few more things in preparation for upcoming pgindent run

Tweak a few more things in preparation for upcoming pgindent run.

These adjustments adjust code and comments in minor ways to prevent
pgindent from mangling them. Among other things, I tried to avoid
situations where pgindent would emit "a +b" instead of "a + b", and I
tried to avoid having it break up inline comments across multiple
lines.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/8826d850781cb328482c8f92af2a3d93385cd63b

Modified Files
--------------
contrib/pageinspect/heapfuncs.c | 7 ++++---
src/backend/executor/execParallel.c | 6 +++---
src/backend/executor/nodeAgg.c | 5 +++--
src/backend/tsearch/spell.c | 8 +++++---
src/backend/tsearch/to_tsany.c | 9 +++++++--
src/backend/utils/adt/dbsize.c | 9 ++++++---
src/backend/utils/adt/tsginidx.c | 7 ++++---
src/backend/utils/adt/tsvector_op.c | 3 ++-
8 files changed, 34 insertions(+), 20 deletions(-)