- implemented SymInitializeW (and made SymInitialize call it)
- implemented Sym{SG}etSearchPathW (and made Sym{SG}etSearchPath
  call them)
- per process search path is now stored as unicode string

Share shader_dump_ins_modifiers(), and make vertex shaders use it.
The saturate modifer (_sat) is valid on vs_3_0+, and it isn't being
shown in the trace.

Volume is only valid when sound card has volume support.

Fix parsing of 'long int'.
Simplify handling of spaces in a couple of regular expressions.

the buffer in the MIDL_STUB_MESSAGE in the inner pointer
marshalling/unmarshalling routines as these can be used for embedded
pointers, which handle the allocating or finding of the buffer
themselves. Do the incrementing in the outer
NdrPointerMarshall/Unmarshall/BufferSize routines instead.

rpcrt4: Remove unintuitive requirement to pass the required alignment boundary minus one into the alignment macros.

It should have its own exception handler to catch any exceptions that are raised.

Based on a patch by Rob Shearman.

This allows simplifying the handling of 16-bit thunks.