Document --rtc-td-hack, --localtime and --startdate as deprecated

These options have been marked in a comment in qemu-options.hx as
deprecated in 2009 already (see commit 1ed2fc1f), but we
never informed the users about these deprecations. Let's catch up
on that omission now.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Message-Id: <1519138892-12836-1-git-send-email-thuth@redhat.com>
[Fix messages. - Paolo]
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

qemu-doc.texi

@@ -2723,12 +2723,18 @@ filesystem test suite. Also it requires the CAP_DAC_READ_SEARCH capability,
 which is not the recommended way to run QEMU. This backend should not be
 used and it will be removed with no replacement.
 
-@subsection -no-frame (since 2.12.0)
+@subsection -rtc-td-hack (since 2.12.0)
 
-The ``-no-frame'' argument works with SDL 1.2 only.  SDL 2.0 lacks
-support for frameless windows, and the other user interfaces never
-implemented this in the first place.  So this will be removed together
-with SDL 1.2 support.
+The @code{-rtc-td-hack} option has been replaced by
+@code{-rtc driftfix=slew}.
+
+@subsection -localtime (since 2.12.0)
+
+The @code{-localtime} option has been replaced by @code{-rtc base=localtime}.
+
+@subsection -startdate (since 2.12.0)
+
+The @code{-startdate} option has been replaced by @code{-rtc base=@var{date}}.
 
 @section qemu-img command line arguments
 

vl.c

@@ -3406,6 +3406,8 @@ int main(int argc, char **argv, char **envp)
                 break;
             case QEMU_OPTION_localtime:
                 rtc_utc = 0;
+                warn_report("This option is deprecated, "
+                            "use '-rtc base=localtime' instead.");
                 break;
             case QEMU_OPTION_vga:
                 vga_model = optarg;
@@ -3665,6 +3667,8 @@ int main(int argc, char **argv, char **envp)
                 };
 
                 qdev_prop_register_global(&slew_lost_ticks);
+                warn_report("This option is deprecated, "
+                            "use '-rtc driftfix=slew' instead.");
                 break;
             }
             case QEMU_OPTION_acpitable:
@@ -3866,6 +3870,7 @@ int main(int argc, char **argv, char **envp)
                  */
                 break;
             case QEMU_OPTION_startdate:
+                warn_report("This option is deprecated, use '-rtc base=' instead.");
                 configure_rtc_date_offset(optarg, 1);
                 break;
             case QEMU_OPTION_rtc: