Port emacsclient euidaccess to Solaris 10

Without this fix, linking emacsclient fails with ‘Undefined
symbol eaccess’ on Solaris 10 sparc.
* lib-src/Makefile.in (LIB_EACCESS): New macro.
(emacsclient${EXEEXT}, emacsclientw${EXEEXT}): Use it.

lib-src/Makefile.in

@@ -204,6 +204,8 @@ LIBRESOLV=@LIBRESOLV@
 LIBS_MAIL=@LIBS_MAIL@
 ## empty or -lrt or -lposix4 if HAVE_CLOCK_GETTIME
 LIB_CLOCK_GETTIME = @LIB_CLOCK_GETTIME@
+## Whatever libraries are needed for euidaccess
+LIB_EACCESS=@LIB_EACCESS@
 ## empty or -lwsock2 for MinGW
 LIB_WSOCK32=@LIB_WSOCK32@
 
@@ -398,12 +400,12 @@ pop.o: ${srcdir}/pop.c ${srcdir}/pop.h ${srcdir}/../lib/min-max.h $(config_h)
 emacsclient${EXEEXT}: ${srcdir}/emacsclient.c $(NTLIB) $(config_h)
 	$(AM_V_CCLD)$(CC) ${ALL_CFLAGS} $< \
 	   -DVERSION="\"${version}\"" $(NTLIB) $(LOADLIBES) \
-	   $(LIB_WSOCK32) $(LIBS_ECLIENT) -o $@
+	   $(LIB_WSOCK32) $(LIB_EACCESS) $(LIBS_ECLIENT) -o $@
 
 emacsclientw${EXEEXT}: ${srcdir}/emacsclient.c $(NTLIB) $(CLIENTRES) $(config_h)
 	$(AM_V_CCLD)$(CC) ${ALL_CFLAGS} $(CLIENTRES) -mwindows $< \
 	   -DVERSION="\"${version}\"" $(LOADLIBES) \
-	   $(LIB_WSOCK32) $(LIBS_ECLIENT) -o $@
+	   $(LIB_WSOCK32) $(LIB_EACCESS) $(LIBS_ECLIENT) -o $@
 
 NTINC = ${srcdir}/../nt/inc
 NTDEPS = $(NTINC)/ms-w32.h $(NTINC)/sys/stat.h $(NTINC)/inttypes.h \