Log Message:
pkgconf: updated to 1.9.5

Changes from 1.9.4 to 1.9.5:
----------------------------
* Fix incorrect assumptions involving the use of ctype(3) functions.
* Fix detection of provided functions on autoconf.
* Fix deletion of tests/meson.build by the autoconf build system.
* Fix quoting rules in argvsplit.c.
* Update libpkgconf documentation and documentation building scripts.
* Enforce maximum package count correctly for --modversion.