Set the correct shebangs and fix post/un's

python3.spec

@@ -1002,7 +1002,11 @@ sed -i -e "s/'pyconfig.h'/'%{_pyconfig_h}'/" \
 # so handle files named using other naming scheme separately.
 LD_LIBRARY_PATH=./build/optimized ./build/optimized/python \
   Tools/scripts/pathfix.py \
+%if %{with platform_python}
+  -i "%{_libexecdir}/platform-python" \
+%else
   -i "%{_bindir}/python%{pybasever}" \
+%endif # with platform_python
   %{buildroot} %{buildroot}%{pylibdir}/Tools/scripts/*-*.py \
   %{buildroot}%{pylibdir}/Tools/pynche/{pynche,pynche.pyw}
 # not covered, also redundant and useless:
@@ -1039,6 +1043,9 @@ rm %{buildroot}%{pylibdir}/LICENSE.txt
 # Do bytecompilation with the newly installed interpreter.
 # This is similar to the script in macros.pybytecompile
 # compile *.pyc
+# Platform-Python note:
+#   We're compiling with the /usr/bin/python3.X executable as
+#   the /usr/libexec/platform-python executable is created later in the spec
 find %{buildroot} -type f -a -name "*.py" -print0 | \
     LD_LIBRARY_PATH="%{buildroot}%{dynload_dir}/:%{buildroot}%{_libdir}" \
     PYTHONPATH="%{buildroot}%{_libdir}/python%{pybasever} %{buildroot}%{_libdir}/python%{pybasever}/site-packages" \
@@ -1186,9 +1193,9 @@ CheckPython optimized
 # Scriptlets
 # ======================================================
 
-%post libs -p /sbin/ldconfig
+%post -n python%{python3_pkgversion}-libs -p /sbin/ldconfig
 
-%postun libs -p /sbin/ldconfig
+%postun -n python%{python3_pkgversion}-libs -p /sbin/ldconfig
 
 %post
 /bin/touch --no-create %{_datadir}/icons/hicolor &>/dev/null || :