graphics/png: update to 1.6.38

* Fixed various errors in the handling of tRNS, hIST and eXIf.
* Implemented many stability improvements across all platforms.

from Brad

graphics/png/Makefile

@@ -1,9 +1,8 @@
 COMMENT=	library for manipulating PNG images
 
-VERSION=	1.6.37
+VERSION=	1.6.38
 DISTNAME=	libpng-${VERSION}
 PKGNAME=	png-${VERSION}
-REVISION=	0
 CATEGORIES=	graphics
 DPB_PROPERTIES=	parallel
 MASTER_SITES=	${MASTER_SITE_SOURCEFORGE:=libpng/}

graphics/png/distinfo

@@ -1,2 +1,2 @@
-SHA256 (libpng-1.6.37.tar.xz) = UF5wg001ODU3tkkeeuhkHxpL7Rh22/42EgH8gIaNiMo=
-SIZE (libpng-1.6.37.tar.xz) = 1012272
+SHA256 (libpng-1.6.38.tar.xz) = s2g+i4ER6/bxrABOu2sMl1zTEOxGnZg2Q4jpztv6aL4=
+SIZE (libpng-1.6.38.tar.xz) = 1023168

graphics/png/patches/patch-Makefile_in

@@ -3,7 +3,7 @@ Set the library soname to libpng instead of libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.
 Index: Makefile.in
 --- Makefile.in.orig
 +++ Makefile.in
-@@ -761,7 +761,7 @@ EXTRA_SCRIPTS = libpng-config libpng@PNGLIB_MAJOR@@PNG
+@@ -764,7 +764,7 @@ EXTRA_SCRIPTS = libpng-config libpng@PNGLIB_MAJOR@@PNG
  bin_SCRIPTS = @binconfigs@
  
  # rules to build libpng, only build the old library on request
@@ -12,7 +12,7 @@ Index: Makefile.in
  # EXTRA_LTLIBRARIES= libpng.la
  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c \
  	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c \
-@@ -1008,8 +1008,10 @@ powerpc/powerpc_init.lo: powerpc/$(am__dirstamp) \
+@@ -1011,8 +1011,10 @@ powerpc/powerpc_init.lo: powerpc/$(am__dirstamp) \
  powerpc/filter_vsx_intrinsics.lo: powerpc/$(am__dirstamp) \
  	powerpc/$(DEPDIR)/$(am__dirstamp)
  
@@ -24,7 +24,7 @@ Index: Makefile.in
  contrib/tools/$(am__dirstamp):
  	@$(MKDIR_P) contrib/tools
  	@: > contrib/tools/$(am__dirstamp)
-@@ -2383,9 +2385,9 @@ uninstall-libpng-pc:
+@@ -2388,9 +2390,9 @@ uninstall-libpng-pc:
  install-library-links:
  	@set -x; cd '$(DESTDIR)$(libdir)';\
  	for ext in $(EXT_LIST); do\

graphics/png/patches/patch-libpng_pc_in

@@ -4,7 +4,7 @@ Index: libpng.pc.in
 @@ -7,6 +7,6 @@ Name: libpng
  Description: Loads and saves PNG files
  Version: @PNGLIB_VERSION@
- Requires: zlib
+ Requires.private: zlib
 -Libs: -L${libdir} -lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
 +Libs: -L${libdir} -lpng
  Libs.private: @LIBS@

graphics/png/pkg/PLIST

@@ -9,10 +9,10 @@ include/libpng16/pnglibconf.h
 include/png.h
 include/pngconf.h
 include/pnglibconf.h
-lib/libpng.a
+@static-lib lib/libpng.a
 lib/libpng.la
 @lib lib/libpng.so.${LIBpng_VERSION}
-lib/libpng16.a
+@static-lib lib/libpng16.a
 lib/libpng16.la
 @lib lib/libpng16.so.${LIBpng16_VERSION}
 lib/pkgconfig/libpng.pc