libxslt: add upstream patch to fix --maxvars handling

Needed to build the manual in PDF format if the host doesn't have a fixed
xsltproc.

(by make host-libxsltproc; PATH=output/host/usr/bin:$PATH make manual-pdf)

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libxslt/0001-Make-maxvars-option-work.patch

@@ -0,0 +1,30 @@
+From 5af7ad745323004984287e48b42712e7305de35c Mon Sep 17 00:00:00 2001
+From: Per Hedeland <per@hedeland.org>
+Date: Fri, 13 Dec 2013 14:43:06 +0100
+Subject: [PATCH] Make --maxvars option work
+
+From upstream: https://gitorious.org/libxslt/libxslt/commit/5af7ad745323004984287e48b42
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ xsltproc/xsltproc.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/xsltproc/xsltproc.c b/xsltproc/xsltproc.c
+index b22df37..66d8cbb 100644
+--- a/xsltproc/xsltproc.c
++++ b/xsltproc/xsltproc.c
+@@ -803,6 +803,10 @@ main(int argc, char **argv)
+             (!strcmp(argv[i], "--maxdepth"))) {
+             i++;
+             continue;
++        } else if ((!strcmp(argv[i], "-maxvars")) ||
++            (!strcmp(argv[i], "--maxvars"))) {
++            i++;
++            continue;
+         } else if ((!strcmp(argv[i], "-maxparserdepth")) ||
+             (!strcmp(argv[i], "--maxparserdepth"))) {
+             i++;
+-- 
+2.1.0
+