Generate additional .vcproj files in miscellaneous top-level components.

This also updates the .vcproj files themselves to fix minor stylistic
incompatibilities with the rest.  Affected .vcproj files:
* No change (byte-for-byte identical):
    media\build\media.vcproj
    media\build\media_player.vcproj
    media\build\media_unittests.vcproj
    google_update\ondemand_updates.vcproj
* Remove .\ prefix where inconsistent with the rest of a filelist:
    rlz\rlz.vcproj
    breakpad\breakpad_handler.vcproj
* Add empty <ToolFiles>, <References> and <Globals> sections:
    breakpad\breakpad_sender.vcproj
* Add explicit RootNamespace attribute:
    sdch\sdch.vcproj
* Use Windows-canonical \ separators:
    sdch\sdch.vcproj
* Remove unnecessary Filter and UniqueIdentifier attributes from
  <Filter> declarations:
    sdch\sdch.vcproj

Additional cleanups along for the ride:
* Split breakpad\SConscript logic into separate
  breakpad_{handler,sender}.scons files.
* Add a media\media_player.scons configuration.
Review URL: http://codereview.chromium.org/18717

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8644 0039d316-1c4b-4281-b951-d872f2087c98

• breakpad/SConscript[diff]
• breakpad/breakpad_handler.scons[Added - diff]
• breakpad/breakpad_handler.vcproj[diff]
• breakpad/breakpad_sender.scons[Added - diff]
• breakpad/breakpad_sender.vcproj[diff]
• google_update/SConscript[diff]
• media/media.scons[diff]
• media/media_lib.scons[diff]
• media/media_player.scons[Added - diff]
• media/media_unittests.scons[diff]
• rlz/SConscript[diff]
• rlz/rlz.vcproj[diff]
• sdch/SConscript[diff]
• sdch/sdch.vcproj[diff]