Apply LATEXOPTS to all LaTeX runs.

If the build folder does not have the .aux file created yet a different build
rule triggers that was lacking the LATEXOPTS variable, thus not running in
nonstopmode. This results in the builds hanging in interactive mode if the
sources contain an error.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26986 a1c6a512-1295-4272-9138-f99709370657
diff --git a/manual/LaTeX.Rules b/manual/LaTeX.Rules
index 09404ea..5a1e585 100644
--- a/manual/LaTeX.Rules
+++ b/manual/LaTeX.Rules
@@ -267,7 +267,7 @@
 #
 
 %.aux %.idx : $(XFIG_TEX)
-	$(LATEX) $*
+	$(LATEX) $(LATEXOPTS) $*
 
 #
 # Distill xfig .fig files into .fig.tex and either .fig.pdf or .fig.ps