https://bugs.webkit.org/show_bug.cgi?id=121356

Reviewed by Martin Robinson.

Source/WebCore:

Don't use LIBXSLT_CFLAGS when compiling libWebCorePlatform and
libWebCoreGtk, no source files use libxslt there.

* GNUmakefile.am:

Source/WebKit/gtk:

Don't use LIBXSLT_CFLAGS when compiling libwebkitgtk, no source
files use libxslt there.

The webkit tests don't use libxslt, so we shouldn't link against
it.

* GNUmakefile.am:

Source/WebKit2:

Don't use LIBXSLT_CFLAGS when compiling libWebCoreGtk2, no source
files use libxslt there.

* GNUmakefile.am:

Tools:

TestWebCore, WebKitTestRunner and MiniBrowser don't use libxslt,
so we don't need to link against it.

* MiniBrowser/gtk/GNUmakefile.am:
* TestWebKitAPI/GNUmakefile.am:
* WebKitTestRunner/GNUmakefile.am:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@155768 268f45cc-cd09-0410-ab3c-d52691b4dbfc