To handle .dict.dz file

[walkingice]

So far it can only handle .dict file, but not .dict.dz format.

According to stardict documentation, dict file of the dictionary file could be '*.dict.dz'.

dz file is dictzip file. should be compatible to gzip file. And so far we use apache-common-compress utils to extract compressed file. Got some problem with dz file.

ref: 89b3a0c
ref: http://linuxcommand.org/man_pages/dictzip1.html