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/ParseHelper.h

@@ -448,7 +448,7 @@ protected:
     //     * note, that appropriately gives an error if redeclaring a block that
     //       was already used and hence already copied-up
     //
-    //  - on seeing a layout declaration that sizes the array, fix everything in the 
+    //  - on seeing a layout declaration that sizes the array, fix everything in the
     //    resize-list, giving errors for mismatch
     //
     //  - on seeing an array size declaration, give errors on mismatch between it and previous