Make links to external programs clickable in manual, update link. Fixes

#223

latexdiff-man.tex

@@ -5,6 +5,8 @@
 \setlength{\parindent}{0pt}                                                                              
 %\setlength{\textwidth}{6.5in}
 %\setlength{\oddsidemargin}{0.0in}                                                                                  
+\usepackage{hyperref}
+
 \title{Marking up differences between latex files with {\em latexdiff}}
 \author{F.J. Tilmann\thanks{[email protected]}}
 \date{\today}
@@ -358,9 +360,9 @@ \section*{External tools}
 
 \begin{description}
  \item[latexdiffcite] (Author: Christer van der Meeren)  is a wrapper around latexdiff to make citations diff properly. It works by expanding \verb|\cite| type commands using the bbl or bib file, such that citations are treated just like normal text rather than as atomic in the plain latexdiff. \\
-\verb|https://latexdiffcite.readthedocs.org|
+\url{https://latexdiffcite.readthedocs.org}
 \item[git-latexdiff] (lead author: Matthieu Moy) is a wrapper (bash script) around latexdiff that allows using it to diff two revisions of a \LaTeX file under git revision control Similar functionality is provided by \verb|latexdiff-vc --git| with \verb|--flatten| option included with this distribution but git-latexdiff allows more fine-grained control on various aspects. (Not to be confused with latexdiff-git, which is normally installed as a soft link to latexdiff-vc) \\
-\verb|https://gitorious.org/git-latexdiff/|
+\url{https://gitlab.com/git-latexdiff/git-latexdiff}
 
 \end{description}