pgsql: Get rid of long datatype in CATCACHE_STATS enabled builds

Get rid of long datatype in CATCACHE_STATS enabled builds

"long" is 32 bits on Windows 64-bit. Switch to a datatype that's 64-bit
on all platforms. While we're there, use an unsigned type as these
fields count things that have occurred, of which it's not possible to
have negative numbers of.

Author: David Rowley <dgrowleyml(at)gmail(dot)com>
Reviewed-by: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Reviewed-by: Peter Eisentraut <peter(at)eisentraut(dot)org>
Discussion: https://postgr.es/m/CAApHDvoGFjSA3aNyVQ3ivbyc4ST=CC5L-_VjEUQ92HbE2Cxovg@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/9c047da51f270b25fe03ee114e1de0c64aa9cc18

Modified Files
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src/backend/utils/cache/catcache.c | 26 ++++++++++++++++----------
src/include/utils/catcache.h | 14 +++++++-------
2 files changed, 23 insertions(+), 17 deletions(-)