This patch allows us to make the libgcrypt dependency optional (which it
is, if you look at the code), which in turns allows us to build CRDA
without the signature-checking capability on 'regulatory.bin'.

--- crda/Makefile	2015-07-17 11:33:33.546712893 +0200
+++ crda/Makefile	2015-07-17 11:34:05.210994373 +0200
@@ -45,12 +45,14 @@ LDLIBS += `pkg-config --libs openssl`
 $(LIBREG): keys-ssl.c
 
 else
+ifeq ($(USE_GCRYPT),1)
 CFLAGS += -DUSE_GCRYPT
 LDLIBS += -lgcrypt
 
 $(LIBREG): keys-gcrypt.c
 
 endif
+endif
 MKDIR ?= mkdir -p
 INSTALL ?= install
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<tr><td><span title='2019-05-15 16:36:21 +0200'>2019-05-15</span></td><td><a href='/guix/commit/po/doc/guix-manual.zh_CN.po?id=32747aa987bd921bc8aadc1c1d4b4da6d9bcc306'>nls: Update 'zh_CN' translation.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-27 10:42:15 +0200'>2019-04-27</span></td><td><a href='/guix/commit/po/doc/guix-manual.zh_CN.po?id=615b147f3a1234f801e3138c47d821cb820257b8'>nls: Fix wrong include name.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/doc/guix-manual.zh_CN.po: Fix wrong include name.
</span></span></td><td>Clément Lassieur</td></tr>
<tr><td><span title='2019-04-27 00:02:15 +0200'>2019-04-27</span></td><td><a href='/guix/commit/po/doc/guix-manual.zh_CN.po?id=cdb57a831c0f778c2d856b92f875b54b91afadd7'>nls: Update 'zh_CN' translation.</a><span class='msg-avail'>...<span class='msg-tooltip'>Refer to the right version.*.texi to prevent errors in Makefile.am.
</span></span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2019-04-24 00:24:07 +0200'>2019-04-24</span></td><td><a href='/guix/commit/po/doc/guix-manual.zh_CN.po?id=3068509ac12df6f2fc6e500019a4d8bbf75d32a2'>nls: Fix guix-manual.zh_CN.po.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/doc/guix-manual.zh_CN.po: Replace "@def" with "@dfn".  Translate
the "contributing.texi" message ID.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-24 00:17:15 +0200'>2019-04-24</span></td><td><a href='/guix/commit/po/doc/guix-manual.zh_CN.po?id=544cab3dccb5ee8c0b691c173546a26f0e25625a'>doc: Add zh_CN PO file.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/doc/guix-manual.zh_CN.po: New file.
</span></span></td><td>Ludovic Courtès</td></tr>