Disable XSLT support

Change is under gyp flag disable_xslt
Merge pull request #33 from wang16/mini_xslt

Disable XSLT support
Fix CrosswalkMini debug build link error

Two more files need to be procted with the disable_media_stream condition.

BUG=https://crosswalk-project.org/jira/browse/XWALK-2980
Merge pull request #34 from halton/mini_link_error

Fix CrosswalkMini debug build link error
Disable webp under gyp flag disable_webp
Merge pull request #35 from wang16/mini_webp

Disable webp under gyp flag disable_webp
Disable Inspector, WebDevTools, ScriptDebugServer
APK's size shrinks 349KB, libxwalkcore's size shrinks 796KB
All changes are under flag disable_inspector

[Disable files to be tailored]
bindings/core/idl.gypi
bindings/core/v8/custom/custom.gypi
bindings/core/v8/v8.gypi
build/features.gypi
core/core.gyp
core/core.gypi
modules/modules.gypi
core/inspector/CodeGeneratorInstrumentation.py

[Remove implementation but reserve interface]
core/inspector/InspectorController.cpp
core/inspector/InspectorController.h
core/inspector/InspectorInstrumentation.cpp
core/inspector/InspectorInstrumentation.h
core/inspector/InspectorTraceEvents.cpp
core/inspector/ScriptAsyncCallStack.cpp
core/inspector/ScriptAsyncCallStack.h
core/inspector/ScriptCallFrame.cpp
core/inspector/ScriptCallFrame.h
core/inspector/ScriptCallStack.cpp
core/inspector/ScriptCallStack.h
core/inspector/ScriptProfile.cpp
core/inspector/ScriptProfile.h
web/WebDevToolsAgentImpl.cpp
web/WebDevToolsAgentImpl.h
web/WebDevToolsFrontendImpl.cpp
web/WebDevToolsFrontendImpl.h
core/frame/ConsoleBase.cpp
core/frame/FrameConsole.cpp
core/dom/Document.cpp

[Remove calling code due to tailored files]
modules/geolocation/GeolocationController.cpp
modules/geolocation/GeolocationController.h
modules/webdatabase/DatabaseClient.cpp
modules/webdatabase/DatabaseClient.h
web/WebEmbeddedWorkerImpl.cpp
web/WebEmbeddedWorkerImpl.h
web/WebSharedWorkerImpl.cpp
web/WebSharedWorkerImpl.h
core/workers/WorkerGlobalScope.cpp
core/workers/WorkerGlobalScope.h
core/workers/WorkerMessagingProxy.cpp
core/workers/WorkerMessagingProxy.h
core/workers/WorkerThread.cpp
core/workers/WorkerThread.h
core/loader/appcache/ApplicationCacheHost.cpp
bindings/core/v8/V8PerIsolateData.cpp
web/WebViewImpl.cpp