Re-separating Win32 and Win64 builds.

Re-separating Win32 and Win64 builds.
https://bugs.webkit.org/show_bug.cgi?id=120178

Reviewed by Brent Fulgham.

Source/JavaScriptCore:

* JavaScriptCore.vcxproj/JavaScriptCoreGenerated.make:
* JavaScriptCore.vcxproj/LLInt/LLIntAssembly/LLIntAssembly.make:
* JavaScriptCore.vcxproj/LLInt/LLIntDesiredOffsets/LLIntDesiredOffsets.make:
Pass PlatformArchitecture as a command line parameter to bash scripts.
* JavaScriptCore.vcxproj/LLInt/LLIntAssembly/build-LLIntAssembly.sh:
* JavaScriptCore.vcxproj/LLInt/LLIntDesiredOffsets/build-LLIntDesiredOffsets.sh:
* JavaScriptCore.vcxproj/build-generated-files.sh:
Use PlatformArchitecture from command line to determine which object directory to use (obj32 or obj64).

Source/WebCore:

* WebCore.vcxproj/WebCoreGenerated.make:
* WebCore.vcxproj/WebCoreGeneratedWinCairo.make:
Pass PlatformArchitecture as a command line parameter to bash scripts
and use PlatformArchitecture to determine which directory to delete
while cleaning (obj32 or obj64).
* WebCore.vcxproj/WebCoreGeneratedWinCairoCommon.props:
Export PlatformArchitecture to be used by make and cmd scripts.
* WebCore.vcxproj/build-generated-files.sh:
Use PlatformArchitecture from command line to determine which object directory to use (obj32 or obj64).
* WebCore.vcxproj/copyForwardingHeaders.cmd:
* WebCore.vcxproj/copyWebCoreResourceFiles.cmd:
Use PlatformArchitecture to determine which directory to copy to (obj32 or obj64).

Source/WebKit:

* WebKit.vcxproj/WebKit/WebKitPostBuild.cmd:
* WebKit.vcxproj/WebKitExportGenerator/WebKitExportGeneratorBuildCmd.cmd:
* WebKit.vcxproj/WebKitExportGenerator/WebKitExportGeneratorPostBuild.cmd:
* WebKit.vcxproj/WebKitExportGenerator/WebKitExportGeneratorPreBuild.cmd:
Use PlatformArchitecture to determine correct object directory (obj32 or obj64).

Source/WTF:

* WTF.vcxproj/WTFGenerated.make:
Pass PlatformArchitecture as a command line parameter to bash scripts.
* WTF.vcxproj/build-generated-files.sh:
Use PlatformArchitecture from command line to determine which object directory to use (obj32 or obj64).

WebKitLibraries:

* win/tools/vsprops/common.props:
Export PlatformArchitecture to be used by make and cmd scripts.
Use PlatformArchitecture to determine correct build directory
(lib32/bin32/obj32 or lib64/bin64/obj64).

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@154513 268f45cc-cd09-0410-ab3c-d52691b4dbfc