Cooper Partin

**Description** A recent change was made to update string conversion helpers to always use UTF-8. It was noticed on linux platforms that the wrapper code performing the conversions was assuming...

dxcapi.h is missing #defines for 2 DXC_PART_ values ('S','F','I','0' and 'P','S','V','0')

2

**Description** While enumerating parts in a DXIL container using the reflection data interface, I noticed that there were some unknown values being returned. Looks like the dxcapi.h is missing them...

IDxcResult output enumeration is reporting multiple DXC_OUT_NONE values and missing supported DXC_OUT_ values.

2

**Description** Calling IDxcResult::GetNumOutputs( ) and enumerating outputs by index is returning incorrect results **Steps to Reproduce** ```c++ IDxcResult* result; // Obtained from Compile( ) uint32_t numOutputs = result->GetNumOutputs(); std::cout