Non-Functional: Whitespace, comments, replace accidentally deleted comment.

- fixed ParseHelper.cpp newlines (crlf -> lf)
- removed trailing white space in most source files
- fix some spelling issues
- extra blank lines
- tabs to spaces
- replace #include comment about no location

glslang/MachineIndependent/preprocessor/PpTokens.h

@@ -56,7 +56,7 @@ Except as expressly stated in this notice, no other rights or licenses
 express or implied, are granted by NVIDIA herein, including but not
 limited to any patent rights that may be infringed by your derivative
 works or by other works in which the NVIDIA Software may be
-incorporated. No hardware is licensed hereunder. 
+incorporated. No hardware is licensed hereunder.
 
 THE NVIDIA SOFTWARE IS BEING PROVIDED ON AN "AS IS" BASIS, WITHOUT
 WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED,
@@ -128,7 +128,7 @@ enum EFixedAtoms {
 #endif
     PpAtomConstString,
 
-    // Identifiers 
+    // Identifiers
     PpAtomIdentifier,
 
     // preprocessor "keywords"