For each table entry, a FindTagItem() will be done and if the matching tag is found in the taglist, the data field will be packed into the given structure based on the packtable definition.
INPUTS
pack
a pointer to the data area to fill in.
packTable
a pointer to the packing information table. See utility/pack.h for definition and macros.
tagList
a pointer to the taglist to pack into the structure