PATCH: Fix Kmtests, Win32knt, crtdll_crt, ntdll_crt, msvcrt_crt log links in Testman

The attached patch should fix the links in the logs of Kmtests, Win32knt, crtdll_crt, ntdll_crt, msvcrt_crt tests.
The patch is untested by obvious reasons.
Patch includes the following fixes:

• Add support to Kmtests folders and subfolders in get_file_url() since it doesn't belong to apitests nor winetests.
• Fix xxx_crt path resolution. Crtdll_crt, ntdll_crt, msvcrt_crt shares the same /crt/ folder so we can't use the module name directly to forge the path.
• Fix win32knt path resolution. Since its folder is called win32nt we can't use the module name directly to forge the path.
• Add support for win32knt subfolders.

Hope it helps to enhance Testman usability.