Get the iperf version number from autoconf, don't track the tagging date.

These simplify the release process because they eliminate a manual
file-editing step.

configure.ac

@@ -89,4 +89,4 @@ AC_CHECK_FUNCS([cpuset_setaffinity sched_setaffinity],
 # it needs and what arguments it expects.
 AC_CHECK_FUNCS([sendfile])
 
-AC_OUTPUT([Makefile src/Makefile examples/Makefile])
+AC_OUTPUT([Makefile src/Makefile src/version.h examples/Makefile])

src/locale.c

@@ -139,7 +139,7 @@ const char usage_longstr[] = "Usage: iperf [-s|-c host] [options]\n"
   "-y, --reportstyle C      report as a Comma-Separated Values\n"
 #endif
 
-const char version[] = PACKAGE_STRING " (" IPERF_VERSION_DATE ")";
+const char version[] = PACKAGE_STRING;
 
 /* -------------------------------------------------------------------
  * settings

src/version.h.in

@@ -7,5 +7,4 @@
  * for complete information.
  */
 
-#define IPERF_VERSION "3.0.1"
-#define IPERF_VERSION_DATE "10 January 2014"
+#define IPERF_VERSION "@PACKAGE_VERSION@"