Fixes error during make:

"No rule to make target '../src/libemilia_pin.a', needed by 'pinball'.  Stop."

--- pinball-0.3.1/src/Makefile.in	2003-12-10 05:34:47.000000000 -0600
+++ pinball-0.3.1/src/Makefile.in	2016-01-31 22:29:13.134519889 -0600
@@ -116,7 +116,7 @@
 
 INCLUDES = -I../base -I../addon @INCLTDL@
 
-pinball_LDADD = ../src/libemilia_pin.a ../addon/libemilia_addon.a ../base/libemilia_base.a @LIBLTDL@
+pinball_LDADD = libemilia_pin.a ../addon/libemilia_addon.a ../base/libemilia_base.a @LIBLTDL@
 pinball_LDFLAGS = -export-dynamic
 
 pinball_SOURCES = Pinball.cpp
@@ -174,7 +174,7 @@
 
 am_pinball_OBJECTS = Pinball.$(OBJEXT)
 pinball_OBJECTS = $(am_pinball_OBJECTS)
-pinball_DEPENDENCIES = ../src/libemilia_pin.a ../addon/libemilia_addon.a \
+pinball_DEPENDENCIES = libemilia_pin.a ../addon/libemilia_addon.a \
 	../base/libemilia_base.a
 
 DEFS = @DEFS@
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<tr><td><span title='2019-05-06 23:21:33 +0200'>2019-05-06</span></td><td><a href='/guix/commit/configure.ac?id=fea338c6ca1922097fa233be85f424c152a4f507'>Add (guix lzlib).</a><span class='msg-avail'>...</span></td><td>Pierre Neidhardt</td></tr>
<tr><td><span title='2019-04-17 11:53:53 +0200'>2019-04-17</span></td><td><a href='/guix/commit/configure.ac?id=f2d86ed0b3e371ee95cbc0098b7b2ccb757bc948'>build: No longer substitute 'LIBGCRYPT'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>