GCC 4.9 and later have libvtv and, just like libstdc++ (see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32354), it doesn't
have $libdir in its RUNPATH, but it NEEDs libgcc_s.  This patch
fixes that.

--- gcc-4.9.2/libvtv/Makefile.in	2014-10-30 09:28:58.000000000 +0100
+++ gcc-4.9.2/libvtv/Makefile.in	2015-04-30 09:51:04.161129705 +0200
@@ -15,6 +15,7 @@
 
 @SET_MAKE@
 
+AM_LDFLAGS = -Wl,-rpath=$(libdir)
 
 VPATH = @srcdir@
 pkgdatadir = $(datadir)/@PACKAGE@
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<tr><td><span title='2017-06-18 18:22:07 +0200'>2017-06-18</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=1f1b3445f43c7b2586144d9ccf52b480dae8b7e0'>gnu: pcsc-lite: Update to 1.8.22.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-05-21 16:37:54 +0200'>2017-05-21</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=1d0aa4d8c2dea7be2e249cc358c190622016da11'>gnu: ccid: Update to 1.4.27.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-05-20 21:42:58 +0200'>2017-05-20</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=fefd4c197fa89480cafd98ae9b32b7f1b3f57686'>gnu: pcsc-lite: Update to 1.8.21.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-01-16 10:00:16 +0100'>2017-01-16</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=2a72d18c712ae975181fbbe35cf98de8e87f608e'>gnu: ccid: Update to 1.4.26.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-01-03 17:15:04 +0100'>2017-01-03</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=e2c303742798f4313017c76bef2b7be95f1e1e25'>gnu: pcsc-lite: Update to 1.8.20 [fixes CVE-2016-10109].</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2016-12-19 14:27:33 +0100'>2016-12-19</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=94a84d8367812f5bf31690906d0ffcb0502c11bd'>gnu: pcsc-lite: Update to 1.8.19.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2016-10-31 10:10:26 +0000'>2016-10-31</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=58fdab1d135376b4d6426cdcbd0a88177f94aa06'>gnu: Add ccid.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2016-10-27 09:56:52 +0100'>2016-10-27</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=a6b256affc94bce215003e52de50ed3fa6fc0106'>gnu: Add pcsc-lite.</a><span class='msg-avail'>...</span></td><td>Mike Gerwitz</td></tr>
<tr><td><span title='2016-10-26 11:00:58 +0100'>2016-10-26</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=07b1fb86753cad7eced6eaca7fc972562d321c3a'>gnu: security-token: Use 'license:' prefix.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2016-10-26 10:45:49 +0100'>2016-10-26</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=f9c339603d751783e40ce99c9f09639f168ba731'>gnu: yubico.scm: Rename to security-token.scm.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>