Fix non-ASCII issues in 3rd party files. Refs #915

* Each of these have been reported upstream respectively, but changing
  it manually here to avoid a potentially long turnaround time.

qrenderdoc/3rdparty/scintilla/src/CaseConvert.h

@@ -32,7 +32,7 @@ const char *CaseConvert(int character, enum CaseConversion conversion);
 
 // When performing CaseConvertString, the converted value may be up to 3 times longer than the input.
 // Ligatures are often decomposed into multiple characters and long cases include:
-// ΐ "\xce\x90" folds to ΐ "\xce\xb9\xcc\x88\xcc\x81"
+// "\xce\x90" folds to "\xce\xb9\xcc\x88\xcc\x81"
 const int maxExpansionCaseConversion=3;
 
 // Converts a mixed case string using a particular conversion.

renderdoc/3rdparty/glslang/glslang/MachineIndependent/iomapper.cpp

@@ -577,7 +577,7 @@ protected:
 /********************************************************************************
 The following IO resolver maps types in HLSL register space, as follows:
 
-t – for shader resource views (SRV)
+t - for shader resource views (SRV)
    TEXTURE1D
    TEXTURE1DARRAY
    TEXTURE2D
@@ -592,7 +592,7 @@ t – for shader resource views (SRV)
    BUFFER
    TBUFFER
     
-s – for samplers
+s - for samplers
    SAMPLER
    SAMPLER1D
    SAMPLER2D
@@ -601,7 +601,7 @@ s – for samplers
    SAMPLERSTATE
    SAMPLERCOMPARISONSTATE
 
-u – for unordered access views (UAV)
+u - for unordered access views (UAV)
    RWBYTEADDRESSBUFFER
    RWSTRUCTUREDBUFFER
    APPENDSTRUCTUREDBUFFER
@@ -613,7 +613,7 @@ u – for unordered access views (UAV)
    RWTEXTURE2DARRAY
    RWTEXTURE3D
 
-b – for constant buffer views (CBV)
+b - for constant buffer views (CBV)
    CBUFFER
    CONSTANTBUFFER
  ********************************************************************************/

renderdoc/3rdparty/zstd/bitstream.h

@@ -414,7 +414,7 @@ MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, U32 nbBits)
  *  Refill `bitD` from buffer previously set in BIT_initDStream() .
  *  This function is safe, it guarantees it will not read beyond src buffer.
  * @return : status of `BIT_DStream_t` internal register.
- *           when status == BIT_DStream_unfinished, internal register is filled with at least 25 or 57 bits */
+ *           when status == BIT_DStream_unfinished, internal register is filled with at least 25 or 57 bits */
 MEM_STATIC BIT_DStream_status BIT_reloadDStream(BIT_DStream_t* bitD)
 {
     if (bitD->bitsConsumed > (sizeof(bitD->bitContainer)*8))  /* overflow detected, like end of stream */