Bump Autoconf dependency to 2.60 for AC_MKDIR_P
Bump Autoconf dependency to 2.60 for AC_MKDIR_P

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=54114
Signed-off-by: Simon McVittie <2b470b34502dbf3ba4bcc04ea7e64f4e0e104f33@collabora.co.uk>
Reviewed-by: Guillaume Desmottes <f16649c7afcd84e3350287183c4ed23cb1aea57c@collabora.co.uk>

freedesktop-unofficial-mirror/telepathy__telepathy-idle,freedesktop-unofficial-mirror/telepathy__telepathy-idle,freedesktop-unofficial-mirror/telepathy__telepathy-idle