Update libsixel to 1.4.1.

                  ------------------------------
                   What's new in libsixel-1.4 ?
                  ------------------------------

* core: SIXEL encoder supports various pixel formats(thanks to @uobikiemukot).

* core: Supports high-color(15bpp output) mode(thanks to @arakiken).

* core: More high compressed output mode is supported(thanks to @arakiken).

* core: Fix typoed API (thanks to @waywardmonkeys).

* core: Fix a minor performance bug (thanks to @arakiken).

* img2sixel: New option -D(--pipe-mode) is introduced.
             with this option, img2sixel continuously read source images from
             stdin.

* img2sixel: Introduce -I(--high-color) option, high-color(15bpp) output mode
             is added(thanks to @arakiken).

* img2sixel: New option -E(--encode-policy) is added. high-compressed
             mode(-E size) is introduced(thanks to @arakiken).

* img2sixel: New option -b(--builtin-palette) is added. built-in support of
             VT-340 palette is added(thanks to @vrtsds).

* img2sixel: Performance inprovement for loading 8bit indexed PNG

* A lots of bug fixes and minor improvements, now tests achieve 90% coverage.

4 files changed, 76 insertions, 6 deletions

diff --git a/graphics/libsixel/Makefile b/graphics/libsixel/Makefile
index c9a90008c05..d6862dfbcf7 100644
--- a/graphics/libsixel/Makefile
+++ b/graphics/libsixel/Makefile
@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.13 2014/11/24 10:44:11 obache Exp $
+# $NetBSD: Makefile,v 1.14 2014/12/03 06:38:27 obache Exp $
 
-DISTNAME=		libsixel-1.3.6
+DISTNAME=		libsixel-1.4.1
 CATEGORIES=		graphics
 MASTER_SITES=		-https://github.com/saitoha/libsixel/archive/v${PKGVERSION_NOREV}${EXTRACT_SUFX}
 
diff --git a/graphics/libsixel/distinfo b/graphics/libsixel/distinfo
index 8000f50b868..34947ec4334 100644
--- a/graphics/libsixel/distinfo
+++ b/graphics/libsixel/distinfo
@@ -1,5 +1,7 @@
-$NetBSD: distinfo,v 1.10 2014/11/24 10:44:11 obache Exp $
+$NetBSD: distinfo,v 1.11 2014/12/03 06:38:27 obache Exp $
 
-SHA1 (libsixel-1.3.6.tar.gz) = e5a0f5fa5698ac9d768f2077afea9060009420aa
-RMD160 (libsixel-1.3.6.tar.gz) = cf3ed7cf51611d5d27c0deffabd382d9c734f6d6
-Size (libsixel-1.3.6.tar.gz) = 2523818 bytes
+SHA1 (libsixel-1.4.1.tar.gz) = 0a23cdb45aa747daa4d6c2c0081295b85be89fdc
+RMD160 (libsixel-1.4.1.tar.gz) = 4aba9ddeea20d23a4986f9e0347414c9e98d6eab
+Size (libsixel-1.4.1.tar.gz) = 4038295 bytes
+SHA1 (patch-configure) = 4339e88886cf6bda5ec7d32c99209e526df151aa
+SHA1 (patch-configure.ac) = 36989cfe656a6a3e21cbf2a4572528db652f5150
diff --git a/graphics/libsixel/patches/patch-configure b/graphics/libsixel/patches/patch-configure
new file mode 100644
index 00000000000..aa338021f5d
--- /dev/null
+++ b/graphics/libsixel/patches/patch-configure
@@ -0,0 +1,34 @@
+$NetBSD: patch-configure,v 1.3 2014/12/03 06:38:27 obache Exp $
+
+* kill bashizm
+  https://github.com/saitoha/libsixel/pull/19
+
+--- configure.orig	2014-11-30 17:14:29.000000000 +0000
++++ configure
+@@ -13853,7 +13853,7 @@ fi
+ 
+ 
+ if test x$with_libcurl != xno; then
+-    if test x$build == x$host; then
++    if test x$build = x$host; then
+         ac_fn_c_check_header_mongrel "$LINENO" "curl/curl.h" "ac_cv_header_curl_curl_h" "$ac_includes_default"
+ if test "x$ac_cv_header_curl_curl_h" = xyes; then :
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curl_easy_cleanup in -lcurl" >&5
+@@ -13997,7 +13997,7 @@ fi
+ 
+ 
+ if test x$with_jpeg != xno; then
+-    if test x$build == x$host; then
++    if test x$build = x$host; then
+         ac_fn_c_check_header_mongrel "$LINENO" "jpeglib.h" "ac_cv_header_jpeglib_h" "$ac_includes_default"
+ if test "x$ac_cv_header_jpeglib_h" = xyes; then :
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for jpeg_read_header in -ljpeg" >&5
+@@ -14067,7 +14067,7 @@ fi
+ 
+ 
+ if test x$with_png != xno; then
+-    if test x$build == x$host; then
++    if test x$build = x$host; then
+         ac_fn_c_check_header_mongrel "$LINENO" "png.h" "ac_cv_header_png_h" "$ac_includes_default"
+ if test "x$ac_cv_header_png_h" = xyes; then :
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for png_check_sig in -lpng" >&5
diff --git a/graphics/libsixel/patches/patch-configure.ac b/graphics/libsixel/patches/patch-configure.ac
new file mode 100644
index 00000000000..05b2d339457
--- /dev/null
+++ b/graphics/libsixel/patches/patch-configure.ac
@@ -0,0 +1,34 @@
+$NetBSD: patch-configure.ac,v 1.3 2014/12/03 06:38:27 obache Exp $
+
+* kill bashizm
+  https://github.com/saitoha/libsixel/pull/19
+
+--- configure.ac.orig	2014-11-30 17:14:29.000000000 +0000
++++ configure.ac
+@@ -296,7 +296,7 @@ AC_SUBST(GD_CFLAGS)
+ AC_SUBST(GD_LIBS)
+ 
+ if test x$with_libcurl != xno; then
+-    if test x$build == x$host; then
++    if test x$build = x$host; then
+         AC_CHECK_HEADER([curl/curl.h],
+                         [AC_CHECK_LIB([curl],
+                                       [curl_easy_cleanup],
+@@ -326,7 +326,7 @@ AC_SUBST(LIBCURL_CFLAGS)
+ AC_SUBST(LIBCURL_LIBS)
+ 
+ if test x$with_jpeg != xno; then
+-    if test x$build == x$host; then
++    if test x$build = x$host; then
+         AC_CHECK_HEADER([jpeglib.h],
+                         [AC_CHECK_LIB([jpeg],
+                                       [jpeg_read_header],
+@@ -349,7 +349,7 @@ AC_SUBST(LIBJPEG_CFLAGS)
+ AC_SUBST(LIBJPEG_LIBS)
+ 
+ if test x$with_png != xno; then
+-    if test x$build == x$host; then
++    if test x$build = x$host; then
+         AC_CHECK_HEADER([png.h],
+                         [AC_CHECK_LIB([png],
+                                       [png_check_sig],