Update user-visible copyright strings to include 2015

Update user-visible copyright strings to include 2015
https://bugs.webkit.org/show_bug.cgi?id=139880

Reviewed by Darin Adler.

Source/JavaScriptCore:

* Info.plist:

Source/WebCore:

* Info.plist:

Source/WebKit/mac:

* Info.plist:

Source/WebKit2:

* DatabaseProcess/EntryPoint/mac/LegacyProcess/Info.plist:
* DatabaseProcess/EntryPoint/mac/XPCService/DatabaseService.Development/Info.plist:
* DatabaseProcess/EntryPoint/mac/XPCService/DatabaseService/Info.plist:
* Info.plist:
* NetworkProcess/EntryPoint/mac/LegacyProcess/Info.plist:
* NetworkProcess/EntryPoint/mac/XPCService/NetworkService.Development/Info-OSX.plist:
* NetworkProcess/EntryPoint/mac/XPCService/NetworkService.Development/Info-iOS.plist:
* NetworkProcess/EntryPoint/mac/XPCService/NetworkService/Info-OSX.plist:
* NetworkProcess/EntryPoint/mac/XPCService/NetworkService/Info-iOS.plist:
* PluginProcess/EntryPoint/mac/LegacyProcess/Info.plist:
* PluginProcess/EntryPoint/mac/XPCService/PluginService.32-64.Info.plist:
* PluginProcess/EntryPoint/mac/XPCService/PluginService.Development/Info.plist:
* WebProcess/EntryPoint/mac/LegacyProcess/Info.plist:
* WebProcess/EntryPoint/mac/XPCService/WebContentService.Development/Info-OSX.plist:
* WebProcess/EntryPoint/mac/XPCService/WebContentService.Development/Info-iOS.plist:
* WebProcess/EntryPoint/mac/XPCService/WebContentService/Info-OSX.plist:
* WebProcess/EntryPoint/mac/XPCService/WebContentService/Info-iOS.plist:
* mac/Info-WebKit2.plist:

WebKitLibraries:

* win/tools/scripts/COPYRIGHT-END-YEAR:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@177849 268f45cc-cd09-0410-ab3c-d52691b4dbfc