Description of problem:
Doxygen generates dot files with invalid syntax when quotation marks appears in
docstrings

Version-Release number of selected component (if applicable):
doxygen-1.5.2-1.fc7

How reproducible:
script below

Steps to Reproduce:
$ echo "HAVE_DOT=YES" > Doxyfile
$ echo "QUIET=YES" >> Doxyfile
$ echo "WARN_IF_UNDOCUMENTED=NO" >> Doxyfile
$ echo '/// "http://example.com/"' > foo.h
$ echo 'class foo { }; class bar : public foo { };' >> foo.h
$ doxygen 
  
Actual results:
Error: inherit__graph__0.dot:6: syntax error near line 6
context:   Node1 [label="foo",height=0.2,width=0.4,color="black",
fillcolor="white", >>>  style="filled",URL="$classfoo.html",tooltip=""http: <<<
//example.com/""];
Problems running dot: exit code=3, command='dot',
arguments='"inherit__graph__0.dot" -Tpng -o "inherit__graph__0.png"'

Expected results:
valid .dot giving inheritance graph

Additional info:
extracted from code generated by gsoap
It worked with doxygen-1.5.1-1 from fc6