Fix include directory for system utf8proc.

--- netsurf-3.10/utils/idna.c
+++ netsurf-3.10/utils/idna.c
@@ -167,7 +167,7 @@
 
 #ifdef WITH_UTF8PROC
 
-#include <libutf8proc/utf8proc.h>
+#include <utf8proc.h>
 
 int32_t idna_contexto[] = {
 	/* CONTEXTO codepoints which have a rule defined */
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<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-07-24 16:23:22 +0200'>2021-07-24</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=6ea7297ea49f6c704afb727a5afe7ef9ce4a4f73'>gnu: Use 'search-input-directory' when looking for tzdata.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-04-26 13:31:15 +0200'>2020-04-26</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=02de4b1da184eb087f6eee794842ceb795cf38fe'>gnu: calcurse: Adjust for Guile 3.0.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2019-12-01 00:49:12 +0100'>2019-12-01</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=93a02ae98c0aa26356e96c28afc1f35cfa8187d8'>gnu: calcurse: Update to 4.5.1.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-06-25 16:24:11 +0200'>2019-06-25</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=fabcf8c60eb3267735e9805cbf1a4ccbddbc38bb'>gnu: calcurse: Update to 4.5.0.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-03-04 19:07:10 +0100'>2019-03-04</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=171234d572e720e06c34e83814d63fcadda06378'>gnu: calcurse: Update to 4.4.0.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-03-04 19:07:10 +0100'>2019-03-04</span></td><td><a href='/guix/commit/gnu/packages/calcurse.scm?id=02eae558fc2a71a9425eb8f8698afe452edebb4b'>gnu: calcurse: Fix documentation directory.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>