no point in calling AC_CHECK_FUNCS multiple times when it accepts multiple arguments

git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1743 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

urjtag/ChangeLog

@@ -3,6 +3,8 @@
   * configure.ac: Unify duplicate driver logic into one macro which also allows
     unifying of the duplicated lists.
 
+  * configure.ac: Unify calls to AC_CHECK_FUNCS.
+
 2010-01-28  Mike Frysinger  <vapier@gentoo.org>
 
   * src/cmd/cmd_bfin.c: Replace one-insn-a-file option with dynamic instruction

urjtag/configure.ac

@@ -110,12 +110,14 @@ else
 	fi
 fi
 
-AC_CHECK_FUNCS(swprintf)
+AC_CHECK_FUNCS(m4_flatten([
+	nanosleep
+	swprintf
+	usleep
+]))
 
 AC_CHECK_FUNC(clock_gettime, [], [ AC_CHECK_LIB(rt, clock_gettime) ])
 
-AC_CHECK_FUNCS(usleep)
-AC_CHECK_FUNCS(nanosleep)
 
 dnl check for sigaction with SA_ONESHOT or SA_RESETHAND
 AC_TRY_COMPILE([#include <signal.h>], [