fixed dep problem.
add xgb file edit commands.
1. fixed atom parse bug. 2. add gpkg -p
fixed atom compare bugs.
fixed binary install bug and package remove bug
improve install.
improve dependance checking.
fixed bugs
fixed bugs
fixed install problems.
fixed bug: make -ip works again.
improved -ub: can replace packge now.
improve rm/list/checksum operations.
improved -I operation.
record conflict files to /var/xiange/db/conflicts
show conflict files
fixed bug: gpkg edit
gpkg edit: fixed bug.
fixed exit bugs.
fixed search bugs