VS2003: changes for older compiler

- nullptr not defined, use nil
- remove unused VCXPROJ with wrong name plMoviePlayer
- std::begin, std::end not defined, conditionally include code for plLocalization::GetLanguageCodes()
      on _MSC_VER >= 1800
- add PLASMA_USE_WEBM to appropriate VS projects
- fix library references to opus, vpx and speex

.hgignore

@@ -1,34 +1,18 @@
 syntax: glob
-*.ncb
-*.suo
-Release/
-Debug/
-syntax: regexp
-^MOULOpenSourceClientPlugin/Plasma20/test/
-^MOULOpenSourceClientPlugin/StaticSDKs/
-syntax: glob
-*.ncb
-*.suo
-Release/
-Debug/
-syntax: regexp
-^MOULOpenSourceClientPlugin/Plasma20/test/
-^MOULOpenSourceClientPlugin/StaticSDKs/
-syntax: glob
-*.ncb
-*.suo
 *.aps
-*.user
-*.sdf
+*.ncb
 *.opensdf
 *.pyc
-Release*/
-Debug*/
-ipch/
+*.sdf
+*.suo
+*.user
 syntax: regexp
+Debug*/
+Release*/
+^MOULOpenSourceClientPlugin/Plasma20/Doxy/
 ^MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/Apps/plClient/external/render/
 ^MOULOpenSourceClientPlugin/Plasma20/test/
 ^MOULOpenSourceClientPlugin/Plasma20/tools/
-^MOULOpenSourceClientPlugin/Plasma20/Doxy/
 ^MOULOpenSourceClientPlugin/StaticSDKs/
 ^patch/
+ipch/