[libpng10] Imported from libpng-1.0.17.tar

scripts/makefile.cygwin

@@ -79,7 +79,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng10
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.0.16
+PNGMIN = 1.0.17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
@@ -176,7 +176,7 @@ $(STATLIB): $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
-$(SHAREDDEF): projects/msvc/png32ms.def
+$(SHAREDDEF): scripts/png32ms.def
 	cat $< | sed -e '1{G;s/^\(.*\)\(\n\)/EXPORTS/;};2,/^EXPORTS/d' | \
 	sed -e 's/\([^;]*\);/;/' > $@
 
@@ -260,7 +260,17 @@ test-config-install: $(DB)/libpng-config
 install: install-static install-shared install-man install-config
 
 # If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location.
+# move the library to its final location.  Use test-dd to test it
+# before then.
+
+test-dd:
+	echo
+	echo Testing installed dynamic shared library in $(DL).
+	$(CC) -I$(DI) $(CFLAGS) \
+	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   -L$(DL) -L$(ZLIBLIB) \
+	   -o pngtestd `$(BINPATH)/libpng10-config --ldflags`
+	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \