gnu: ghostscript: Switch to Artifex Ghostcript and update to 9.21.

* gnu/packages/ghostscript.scm (ghostscript): Update to 9.21.
[source]: Fetch the source from Artifex.
[native-inputs]: Remove pkg-config.
[inputs]: Add jbig2dec and use libjpeg instead of libjpeg-8.
[arguments]: Add #:configure-flags.
[replacement]: Remove field.
(ghostcript/fixed): Remove variable.
* gnu/packages/patches/ghostscript-CVE-2017-8291.patch,
gnu/packages/patches/ghostscript-runpath.patch: Adjust to new upstream
source.
* gnu/packages/patches/ghostscript-CVE-2013-5653.patch,
gnu/packages/patches/ghostscript-CVE-2015-3228.patch,
gnu/packages/patches/ghostscript-CVE-2016-7976.patch,
gnu/packages/patches/ghostscript-CVE-2016-7978.patch,
gnu/packages/patches/ghostscript-CVE-2016-7979.patch,
gnu/packages/patches/ghostscript-CVE-2016-8602.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.

1 files changed, 0 insertions, 47 deletions

diff --git a/gnu/packages/patches/ghostscript-CVE-2016-8602.patch b/gnu/packages/patches/ghostscript-CVE-2016-8602.patch
deleted file mode 100644
index aaf20b6c6c..0000000000
--- a/gnu/packages/patches/ghostscript-CVE-2016-8602.patch
+++ /dev/null
@@ -1,47 +0,0 @@
-The following patch was adapted for GNU Ghostscript
-by Mark H Weaver <[email protected]> based on:
-
-http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=f5c7555c30393e64ec1f5ab0dfae5b55b3b3fc78
-
-From f5c7555c30393e64ec1f5ab0dfae5b55b3b3fc78 Mon Sep 17 00:00:00 2001
-From: Chris Liddell <[email protected]>
-Date: Sat, 8 Oct 2016 16:10:27 +0100
-Subject: [PATCH] Bug 697203: check for sufficient params in .sethalftone5
-
-and param types
----
- psi/zht2.c | 12 ++++++++++--
- 1 file changed, 10 insertions(+), 2 deletions(-)
-
-diff --git a/psi/zht2.c b/psi/zht2.c
-index fb4a264..dfa27a4 100644
---- a/psi/zht2.c
-+++ b/psi/zht2.c
-@@ -82,14 +82,22 @@ zsethalftone5(i_ctx_t *i_ctx_p)
-     gs_memory_t *mem;
-     uint edepth = ref_stack_count(&e_stack);
-     int npop = 2;
--    int dict_enum = dict_first(op);
-+    int dict_enum;
-     ref rvalue[2];
-     int cname, colorant_number;
-     byte * pname;
-     uint name_size;
-     int halftonetype, type = 0;
-     gs_state *pgs = igs;
--    int space_index = r_space_index(op - 1);
-+    int space_index;
-+
-+    if (ref_stack_count(&o_stack) < 2)
-+        return_error(e_stackunderflow);
-+    check_type(*op, t_dictionary);
-+    check_type(*(op - 1), t_dictionary);
-+
-+    dict_enum = dict_first(op);
-+    space_index = r_space_index(op - 1);
- 
-     mem = (gs_memory_t *) idmemory->spaces_indexed[space_index];
- 
--- 
-2.9.1
-