[libpng15] Bump version to libpng-1.6.0alpha01
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 0cfffdb..ac70940 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.7beta05
+SHLIB_MINOR=	1.6.0alpha01
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \