Fix the gcc bison issue for real

Also touch cp/parse.{c,h}, which apparently are the culprit.

build/scripts/build_cross_tools

@@ -124,7 +124,8 @@ copy_headers $haikuSourceDir/headers/posix $tmpIncludeDir/posix
 
 # Touch some files generated by bison, so that bison won't run to update them.
 # Fixes issues with newer bison versions.
-(cd $buildToolsDir/gcc/gcc; touch c-parse.c c-parse.h cexp.c)
+(cd $buildToolsDir/gcc/gcc; touch c-parse.c c-parse.h cexp.c cp/parse.c \
+	cp/parse.h)
 
 # configure gcc
 cd $gccObjDir