[LyX/master] stdtoolbars.inc: add icons for \xleftarrow.png

[Uwe Stöhr]

commit a780443338d08fecd7509022a78e5622549e2a21
Author: Uwe Stöhr <uwesto...@lyx.org>
Date:   Wed Feb 19 23:42:40 2014 +0100

    stdtoolbars.inc: add icons for \xleftarrow.png
    
    LyX supports \xleftarrow since years but an icon in the toolbar was missing

diff --git a/lib/Makefile.am b/lib/Makefile.am
index debe510..827035f 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -1371,6 +1371,8 @@ dist_imagesmath_DATA = \
        images/math/xcancel.png \
        images/math/xi.png \
        images/math/xi2.png \
+       images/math/xleftarrow.png \
+       images/math/xrightarrow.png \
        images/math/Ydown.png \
        images/math/yen.png \
        images/math/Yleft.png \
diff --git a/lib/images/math/xleftarrow.png b/lib/images/math/xleftarrow.png
new file mode 100644
index 0000000..e64a82f
Binary files /dev/null and b/lib/images/math/xleftarrow.png differ
diff --git a/lib/images/math/xrightarrow.png b/lib/images/math/xrightarrow.png
new file mode 100644
index 0000000..3bc0f05
Binary files /dev/null and b/lib/images/math/xrightarrow.png differ
diff --git a/lib/ui/stdtoolbars.inc b/lib/ui/stdtoolbars.inc
index e149727..6f12e8c 100644
--- a/lib/ui/stdtoolbars.inc
+++ b/lib/ui/stdtoolbars.inc
@@ -948,6 +948,8 @@ ToolbarSet
                Item "Longmapsto" "math-insert \Longmapsto"
                Item "longmapsfrom" "math-insert \longmapsfrom"
                Item "Longmapsfrom" "math-insert \Longmapsfrom"
+               Item "xleftarrow" "math-insert \xleftarrow"
+               Item "xrightarrow" "math-insert \xrightarrow"
 #              Item "mapstochar" "math-insert \mapstochar"
 #              Item "Mapstochar" "math-insert \Mapstochar"
 #              Item "mapsfromchar" "math-insert \mapsfromchar"