I'm pretty sure we don't compile anymore with GCC 4.0.

Raise to 4.1, until somebody complains, in which case probably raise
even more :).

Change-Id: I861ccbfb393811d27bedcb1524027fdbc927e55f

configure.ac

@@ -2968,8 +2968,8 @@ if test "$GCC" = "yes" -a -z "$COM_GCC_IS_CLANG"; then
     GCC_VERSION=`echo $_gcc_version | $AWK -F. '{ print \$1*100+\$2 }'`
 
     AC_MSG_RESULT([gcc $_gcc_version])
-    if test "$GCC_VERSION" -lt 0400; then
-        AC_MSG_ERROR([GCC $_gcc_version is too old, must be at least GCC 4.0.0])
+    if test "$GCC_VERSION" -lt 0401; then
+        AC_MSG_ERROR([GCC $_gcc_version is too old, must be at least GCC 4.1.0])
     fi
 else
     # Explicitly force GCC_VERSION to be empty, even for Clang, to check incorrect uses.