rsaenh: Merge the encrypting and decrypting states, as encrypting and decrypting are allowed with the same key.

This allows the handle to the DC to be passed in the WM_CTLCOLORSTATIC 
message sent to the parent.

Often the Linux / MacOS graphics driver version is of no use for
finding a proper driver version to report to the D3D app. So this
patch adds some infrastructure for easy hardcoding of card specific
driver versions to report to the application. This helps applications
which make assumptions based on the driver version, like bug
workarounds.

dbghelp: Disable the S_PUB_FUNC_XXX msc symbols until we know what they do (the first guess is wrong anyway).

dbghelp: When sending back information about a global symbol, only demangle the class & field/method name.

dbghelp: Extended the internal enumeration information so that we know the underlying integral type.