tuned order for isar-ref manual;

--- a/lib/texinputs/isabellesym.sty	Tue Dec 29 22:03:02 2015 +0100
+++ b/lib/texinputs/isabellesym.sty	Tue Dec 29 22:21:28 2015 +0100
@@ -157,22 +157,22 @@
 \newcommand{\isasymreal}{\isamath{\mathrm{I}\mkern-3.8mu\mathrm{R}}}
 \newcommand{\isasymint}{\isamath{\mathsf{Z}\mkern-7.5mu\mathsf{Z}}}
 \newcommand{\isasymleftarrow}{\isamath{\leftarrow}}
+\newcommand{\isasymrightarrow}{\isamath{\rightarrow}}
 \newcommand{\isasymlongleftarrow}{\isamath{\longleftarrow}}
+\newcommand{\isasymlongrightarrow}{\isamath{\longrightarrow}}
 \newcommand{\isasymlonglongleftarrow}{\isamath{\xleftarrow{\hphantom{AAA}}}}  %requires amsmath
+\newcommand{\isasymlonglongrightarrow}{\isamath{\xrightarrow{\hphantom{AAA}}}}  %requires amsmath
 \newcommand{\isasymlonglonglongleftarrow}{\isamath{\xleftarrow{\hphantom{AAAA}}}}  %requires amsmath
-\newcommand{\isasymrightarrow}{\isamath{\rightarrow}}
-\newcommand{\isasymlongrightarrow}{\isamath{\longrightarrow}}
-\newcommand{\isasymlonglongrightarrow}{\isamath{\xrightarrow{\hphantom{AAA}}}}  %requires amsmath
 \newcommand{\isasymlonglonglongrightarrow}{\isamath{\xrightarrow{\hphantom{AAAA}}}}  %requires amsmath
 \newcommand{\isasymLeftarrow}{\isamath{\Leftarrow}}
+\newcommand{\isasymRightarrow}{\isamath{\Rightarrow}}
 \newcommand{\isasymLongleftarrow}{\isamath{\Longleftarrow}}
+\newcommand{\isasymLongrightarrow}{\isamath{\Longrightarrow}}
 \newcommand{\isasymLleftarrow}{\isamath{\Lleftarrow}}  %requires amssymb
-\newcommand{\isasymRightarrow}{\isamath{\Rightarrow}}
-\newcommand{\isasymLongrightarrow}{\isamath{\Longrightarrow}}
 \newcommand{\isasymRrightarrow}{\isamath{\Rrightarrow}}  %requires amssymb
 \newcommand{\isasymleftrightarrow}{\isamath{\leftrightarrow}}
+\newcommand{\isasymLeftrightarrow}{\isamath{\Leftrightarrow}}
 \newcommand{\isasymlongleftrightarrow}{\isamath{\longleftrightarrow}}
-\newcommand{\isasymLeftrightarrow}{\isamath{\Leftrightarrow}}
 \newcommand{\isasymLongleftrightarrow}{\isamath{\Longleftrightarrow}}
 \newcommand{\isasymmapsto}{\isamath{\mapsto}}
 \newcommand{\isasymlongmapsto}{\isamath{\longmapsto}}