When no shared library is installed, the new code to determine the name
of the -gdb.py file yields an empty string. Use the name of the static
library in that case.
libstdc++-v3/ChangeLog:
PR libstdc++/99453
* python/Makefile.am: Use archive name for printer hook if no
dynamic library name is available.
* python/Makefile.in: Regenerate.
(cherry picked from commit 9f7bc160b4a0f27dce248d1226e3ae7104b0e67b)
ad4c21f0f5