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

tests/pp/Makefile

@@ -40,8 +40,8 @@ DIFF_OPTS = -Nu -b -B -I "^\#"
 clean:
 	rm -vf *.output
 
-# 02.test : DIFF_OPTS += -w
-# 15.test : DIFF_OPTS += -w
+02.test : DIFF_OPTS += -w
+15.test : DIFF_OPTS += -I"^XXX:"
 
 # diff options:
 # -b ighore space changes