Not all intermediate files are filtered by .gitignore

[hsluoyz]

@bonsaiviking , I used Visual Studio 2013 to build the nmap project, then my git client shows a lot of intermediate file changes, which is very disturbing. The .gitignore file needs to be updated by adding the following lines to the bottom. Thanks!

My commit is: hsluoyz@28f8134

/libpcre/Debug/
/libpcre/Release/
/liblua/Debug/
/liblua/Release/
/libnetutil/Debug/
/libnetutil/Release/
/liblinear/Debug/
/liblinear/Release/
/libdnet-stripped/Debug/
/libdnet-stripped/Release/
/nbase/Debug/
/nbase/Release/
/mswin32/Debug/
/mswin32/Release/
/nsock/Debug/
/nsock/Release/
/nping/Debug/
/nping/Release/
/nmap-update/Debug/
/nmap-update/Release/
/ncat/Debug/
/ncat/Release/

[hsluoyz]

There's another issue about the project dependence. See the commit here: hsluoyz@28892bd

[Varunram]

Added a few lines apart from those suggested in order to match SVN ignore list.