PP: Fix #1694: Rationalize errors on partially expanded macro argument.

Test/baseResults/cppBad2.vert.out

@@ -1,6 +1,7 @@
 cppBad2.vert
 ERROR: 0:3: 'macro expansion' : End of input in macro b
-ERROR: 1 compilation errors.  No code generated.
+ERROR: 0:3: '' : compilation terminated 
+ERROR: 2 compilation errors.  No code generated.
 
 
 Shader version: 100

Test/baseResults/cppBad3.vert.out

@@ -1,6 +1,7 @@
 cppBad3.vert
 ERROR: 0:3: 'macro expansion' : End of input in macro y
-ERROR: 1 compilation errors.  No code generated.
+ERROR: 0:3: '' : compilation terminated 
+ERROR: 2 compilation errors.  No code generated.
 
 
 Shader version: 100

Test/baseResults/cppBad4.vert.out

@@ -0,0 +1,19 @@
+cppBad4.vert
+ERROR: 0:4: 'macro expansion' : unexpected '#' g
+ERROR: 0:5: '' :  syntax error, unexpected SEMICOLON, expecting LEFT_PAREN
+ERROR: 2 compilation errors.  No code generated.
+
+
+Shader version: 100
+ERROR: node is still EOpNull!
+0:?   Linker Objects
+
+
+Linked vertex stage:
+
+ERROR: Linking vertex stage: Missing entry point: Each stage requires one entry point
+
+Shader version: 100
+ERROR: node is still EOpNull!
+0:?   Linker Objects
+

Test/baseResults/cppBad5.vert.out

@@ -0,0 +1,19 @@
+cppBad5.vert
+ERROR: 0:4: 'macro expansion' : End of input in macro g
+ERROR: 0:5: '' : compilation terminated 
+ERROR: 2 compilation errors.  No code generated.
+
+
+Shader version: 100
+ERROR: node is still EOpNull!
+0:?   Linker Objects
+
+
+Linked vertex stage:
+
+ERROR: Linking vertex stage: Missing entry point: Each stage requires one entry point
+
+Shader version: 100
+ERROR: node is still EOpNull!
+0:?   Linker Objects
+

Test/cppBad4.vert

@@ -0,0 +1,4 @@
+int,i=
+#define f g(#g(y
+#define g(m)
+g(f)

Test/cppBad5.vert

@@ -0,0 +1,4 @@
+int,i=
+#define f g($g(y
+#define g(m)
+g(f)