Fixed image path in complex number docs.

Suppressed draft mode in PDF generation (stops the FO renderer from grabbing draft.png from sourceforge).

[SVN r39973]

libs/math

@@ -1 +1 @@
-Subproject commit b6aa138a794523fc218b1e9619ba7f9d82cc2df7
+Subproject commit 3f036993c93ae1e877e4aaac9917e98e360ffdb8