v1.10

Adapt pldebugger to upstream change.

Upstream commit 753d5eee46d1d9c2c7f28192ae62d5da9d7d1408 allow
PG_PRINTF_ATTRIBUTE to be different in C and C++ code.  With
this change, PG_PRINTF_ATTRIBUTE is replaced with PG_C_PRINTF_ATTRIBUTE.
This commit adjust the pldebugger call accordingly.

DB-3184, Rushabh Lathia, tested by Muralikrishna Bandaru

v1.9

Compatibility with PostgreSQL 18

v1.8

Fix the MSVC++ project file format.

v1.7

Fix the installation of the README.

v1.6

Support for v16 and v17.

v1.5

PG15 is now supported.