There directions are a little more detailed than the original README in the actual sv2Project.zip file.

1. unzip sv2Project to desktop

2. unzip linksaver.zip to toplevel mozilla dir (on my computer its C:\mozilla) which will create a linksaver dir under the top level mozilla dir with the necessary files in it

3. Open the file "mozilla/allmakefiles.sh" and add the following line:
linksaver/Makefile 

4. open a command window and cd to the toplevel mozilla dir and then use the "sh" command create a shell

5. at the command-line type:
./configure

and hit return.

6. then from the command line to the following: 
cd linksaver
make

7. then run mozilla.exe (the one built from source) and install the xpi
9. Run linksaver from the tools menu