LaTeX export: Add \usepackage{latexsym} to the default packages

lisp/ChangeLog

@@ -1,3 +1,8 @@
+2010-03-04  Carsten Dominik  <carsten.dominik@gmail.com>
+
+	* org-latex.el (org-export-latex-classes): Add
+	\usepackage{latexsym} to all classes.
+
 2010-03-03  Carsten Dominik  <carsten.dominik@gmail.com>
 
 	* org-html.el (org-export-as-html): Do not allow protected lines

lisp/org-latex.el

@@ -99,6 +99,7 @@
 \\usepackage{float}
 \\usepackage{wrapfig}
 \\usepackage{soul}
+\\usepackage{latexsym}
 \\usepackage{amssymb}
 \\usepackage{hyperref}"
      ("\\section{%s}" . "\\section*{%s}")
@@ -115,6 +116,7 @@
 \\usepackage{float}
 \\usepackage{wrapfig}
 \\usepackage{soul}
+\\usepackage{latexsym}
 \\usepackage{amssymb}
 \\usepackage{hyperref}"
      ("\\part{%s}" . "\\part*{%s}")
@@ -131,6 +133,7 @@
 \\usepackage{float}
 \\usepackage{wrapfig}
 \\usepackage{soul}
+\\usepackage{latexsym}
 \\usepackage{amssymb}
 \\usepackage{hyperref}"
      ("\\part{%s}" . "\\part*{%s}")
@@ -147,6 +150,7 @@
 \\usepackage{float}
 \\usepackage{wrapfig}
 \\usepackage{soul}
+\\usepackage{latexsym}
 \\usepackage{amssymb}
 \\usepackage{hyperref}"
      org-beamer-sectioning