Windows: krb5_cc_get_prefix_ops test drive letter

If the prefix starts with a drive letter then it is a FILE ccache.

Change-Id: I03399f8f512d555481608d2fc90c8d6ecaba73ad
Windows: heimdal-command.wxs remove plugin dirs

Change-Id: I730ff26d353adb1f725ddcc38e3ae5332af1b39c
Windows: Fix sdk install of Heimdal.Command.msm

Heimdal.Assembly.msm was installed as Heimdal.Command.msm.

Change-Id: Ie070173d9789a1e0c963699f1fd638686803a3de
Windows: Heimdal.Command.msm MULTIPLATFORM_INSTALL

When building a multiplatform installer 64-bit Heimdal.Command.msm
should not include the 32-bit components.

Change-Id: I5a3545d50edb69e982ea6b2febb45637764a8ca2
Windows: installer NTMakefile fix thirdparty paths

The subdirectory level was incorrect in the thirdparty assembly
tests.

Change-Id: Icbb578a5dac11b93ff7f1f5c28caf029e8805eeb