updated doc version

docs/ref.tex

@@ -46,7 +46,7 @@
 \begin{document}
 \title{Free Pascal :\\ Reference guide.}
 \docdescription{Reference guide for Free Pascal.}
-\docversion{1.4}
+\docversion{1.5}
 \input{date.inc}
 \author{Micha\"el Van Canneyt
 % \\ Florian Kl\"ampfl