Eeschema: title bar provides outdated information

[Jacobo Aragunde Pérez]

Application: Eeschema
Version: (2013-01-27 BZR 3925)-testing
Build: wxWidgets 2.8.12 (no debug,Unicode,compiler with C++ ABI 1002,GCC 4.7.2,wx containers,compatible with 2.4,compatible with 2.6)
Platform: Linux 3.7.4-204.fc18.x86_64 x86_64, 64 bit, Little endian, wxGTK
Boost version: 1.49.0
Options: USE_PCBNEW_NANOMETRES=ON
         KICAD_GOST=OFF
         USE_WX_GRAPHICS_CONTEXT=OFF
         USE_WX_OVERLAY=OFF
         KICAD_SCRIPTING=OFF
         KICAD_SCRIPTING_MODULES=OFF
         KICAD_SCRIPTING_WXPYTHON=OFF

There are some situations that cause the title bar not to show updated information. Two examples:
* Create a new project and a new schematic file in it. Save it for the first time, and the title bar would still say [no file].
* Save the schematic document you are working on with a different name using "save as". The title bar will still show the original name, and that's misleading because you don't know which document is currently opened.

[Jacobo Aragunde Pérez (jaragunde)]

A function to update the contents of the title bar already exists, it was just a matter of calling it at the proper moment.

[Martin Errenst (imp-d)]

r3927 stable