[arch-dev-public] [signoff] autoconf-2.66-2 and pkg-config-0.25-2

[Allan McRae]

autoconf-2.66-2 -> patched to fix regressions in 2.66
pkg-config-0.25-2 -> patched to fix issue exposed by autoconf-2.66

Should fix all issues we have seen with the autoconf 2.66 update.

Allan