Allow to specify location of jansson in configure (--with-jansson)
Allow to specify location of jansson in configure (--with-jansson)

Signed-off-by: Daniel Caminada <ec60ba3ea32bd61814a4b0efa19a6a6541c7cc93@ergon.ch>

icing/mod_md,icing/mod_md,icing/mod_md,icing/mod_md,icing/mod_md