Add support for bitmap fonts.

diff --git a/configure b/configure
index 9c348ea..2369042 100755
--- a/configure
+++ b/configure
@@ -10541,6 +10541,7 @@
 
 
 
+
 for ac_header in ft2build.h \
                          freetype/freetype.h \
                          freetype/ftglyph.h \
@@ -10549,6 +10550,7 @@
                          freetype/ftsnames.h \
                          freetype/ttnameid.h \
                          freetype/ftoutln.h \
+                         freetype/ftwinfnt.h \
                          freetype/internal/sfnt.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`