tccpp : "tcc -E -P" : suppress empty lines

Also:
- regenerate all tests/pp/*.expect with gcc
- test "insert one space" feature
- test "0x1E-1" in asm mode case
- PARSE_FLAG_SPACES: ignore \f\v\r better
- tcc.h: move some things

tccgen.c

@@ -6334,7 +6334,7 @@ static int decl0(int l, int is_for_loop_init)
             }
             /* special test for old K&R protos without explicit int
                type. Only accepted when defining global data */
-            if (l == VT_LOCAL || tok < TOK_DEFINE)
+            if (l == VT_LOCAL || tok < TOK_UIDENT)
                 break;
             btype.t = VT_INT;
         }