Fixed backward search issued in for Vim-Latex suite

The problem before:
a new Vim window would try to pop up every time one double-click
somewhere in the PDF file.

Now, only one window would pop up however time you double-click on the
PDF file.
Trying to implement forward search, FAILED.

I tried to follow instruction from
http://bbs.ctex.org/forum.php?mod=viewthread&tid=74881, but it did not
work.

I press \ls and nothing happened.
Please start to sync! Please

Nothing new

Please let me sync

nothing to comment.

Revert "I did nothing!"

This reverts commit
1dc6a87740dd7a4e87f7f7470efdd766f84c9f2c.

I did nothing!

I really did nothing but Github stops me from completing
my sync
I really did nothing.

All I wanted is to get Github synced.