.emacs_d/lisp/bhj-defines.el: fix gnus error
.emacs_d/lisp/bhj-grep.el: fix xml tag selection
.emacs_d/lisp/bhj-set-key.el: add some convevient functions
bin/after-co-ln-s.sh: must copy when the /home is not on same partition as /
bin/swap-control-alt: fix path error
etc/gtags-filter.rc: work around the bin/gen ignored files
bin/filter-out-gitignores: try to work on filtering out the git ignored files for beagrep and grep-gtags

Signed-off-by: Bao Haojun <baohaojun@gmail.com>