Change out versioning code for less hacky versioning code

.gitignore

@@ -1,5 +1,3 @@
-/installed.xml
-/indra/llcommon/llversionviewer.h
 /indra/build-*
 /indra/tools/vstool/obj/
 *.aps
@@ -26,12 +24,5 @@ qtcreator-build/
 /.pc
 /build-*
 /viewer-*
-/indra/newview/res/viewerRes.rc
-/indra/newview/res/viewerRes_bc.rc
-/indra/newview/English.lproj/InfoPlist.strings
-/indra/newview/linux_tools/handle_secondlifeprotocol.sh
-/indra/newview/linux_tools/install.sh
-/indra/newview/linux_tools/refresh_desktop_app_entry.sh
-/indra/newview/linux_tools/wrapper.sh