[goffice] dtoa: install the header.

[Morten Welinder <mortenw src gnome org>]

commit d86026701ff4a0c2014aae71ff499de1c84cd3a8
Author: Morten Welinder <terra gnome org>
Date:   Sat Apr 5 15:29:53 2014 -0400

    dtoa: install the header.

 goffice/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/goffice/Makefile.am b/goffice/Makefile.am
index 22ccda8..030a6a3 100644
--- a/goffice/Makefile.am
+++ b/goffice/Makefile.am
@@ -355,6 +355,7 @@ mathdir = $(goffice_include_dir)/math
 math_HEADERS =                                 \
        math/goffice-math.h                     \
        math/go-accumulator.h                   \
+       math/go-dtoa.h                          \
        math/go-math.h                          \
        math/go-rangefunc.h                     \
        math/go-regression.h                    \