There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.
Implement mshta.exe. It links directly to the function RunHTMLApplication in mshtml and passes the file name and other optional arguments along. While the function is unimplemented in mshtml, it's a start.
[MSHTML] Add ADD_IMPORTLIB to CMakeLists so mshta can link to mshtml.
[BOOTDATA] Add the association information for mshta.exe to the registry.
