1. fixed bug with the accels in sub menus not working

2. fixed minor bugs in wxCmdLineParser, underscores and digits are now allows
   in the option names
3. made wxGetLocalTimeMillis() public, documented it and other time functions,
   added wxDateTime::UNow(), also "%l" format specificator in
   wxDateTime::Format()
4. fixed fatal bug in wxTimeSpan::Format()
5. fixed nice bug in wxDateTime::Subtract(wxDateTime) which returned the result
   with the wrong sign


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7664 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/datetime.tex

@@ -212,6 +212,7 @@ supported. Future versions will support other calendars.
 \helpref{GetBeginDST}{wxdatetimegetbegindst}\\
 \helpref{GetEndDST}{wxdatetimegetenddst}\\
 \helpref{Now}{wxdatetimenow}\\
+\helpref{UNow}{wxdatetimeunow}\\
 \helpref{Today}{wxdatetimetoday}
 
 \membersection{Constructors, assignment operators and setters}
@@ -562,6 +563,10 @@ Example:
     printf("Current time in Paris:\t%s\n", now.Format("%c", wxDateTime::CET).c_str());
 \end{verbatim}
 
+Note that this function is accurate up to second: 
+\helpref{wxDateTime::UNow}{wxdatetimeunow} should be used for better precision
+(but it is less efficient and might not be availabel on all platforms).
+
 \wxheading{See also}
 
 \helpref{Today}{wxdatetimetoday}
@@ -591,6 +596,18 @@ same as \helpref{Now()}{wxdatetimenow}, but the time part is set to $0$).
 
 \helpref{Now}{wxdatetimenow}
 
+\membersection{wxDateTime::UNow}\label{wxdatetimeunow}
+
+\func{static wxDateTime}{UNow}{\void}
+
+Returns the object corresopnding to the current time including the
+milliseconds if a function to get time with such precision is available on the
+current platform (supported under most Unices and Win32).
+
+\wxheading{See also}
+
+\helpref{Now}{wxdatetimenow}
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%% constructors &c %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \membersection{wxDateTime::wxDateTime}\label{wxdatetimewxdatetimedef}
@@ -1069,6 +1086,10 @@ the character which stopped the scan.
 This function does the same as the standard ANSI C {\tt strftime(3)} function.
 Please see its description for the meaning of {\it format} parameter.
 
+It also accepts a few wxWindows-specific extensions: you can optionally specify
+the width of the field to follow using {\tt printf(3)}-like syntax and the
+format specificator {\tt \%l} can be used to get the number of milliseconds.
+
 \wxheading{See also}
 
 \helpref{ParseFormat}{wxdatetimeparseformat}