pgsql: plpython: Avoid the need to redefine *printf macros

plpython: Avoid the need to redefine *printf macros

Until now we undefined and then redefined a lot of *printf macros due to
worries about conflicts with Python.h macro definitions. Current Python.h
doesn't define any *printf macros, and older versions just defined snprintf,
vsnprintf, guarded by #if defined(MS_WIN32) && !defined(HAVE_SNPRINTF).

Thus we can replace the undefine/define section with a single
#define HAVE_SNPRINTF 1

Reviewed-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://postgr.es/m/20230124165814.2njc7gnvubn2amh6@awork3.anarazel.de

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/23c12329a755ad9c70135463d3f067241daf1dcc

Modified Files
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src/pl/plpython/plpython.h | 48 +++-------------------------------------------
1 file changed, 3 insertions(+), 45 deletions(-)