runtime(c): Add missing syntax test files

These were missing from commit c2a967a.

closes: #16470

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/syntax/testdir/dumps/c_integer_constant_01.dump

@@ -17,4 +17,4 @@
 @4|/+0#0000e05&@1| |c|o|r@1|e|c|t| |w|a|y| |t|o| |f|o|r|m| |s|i|g|n|e|d| |v|a|l|u|e| |-|9|2@1|3@1|7|2|0|3|6|8|5|4|7@1|5|8|0|8| +0#0000000&@14
 |}| @73
 @75
-@57|1|8|,|5| @9|5|2|%| 
+@57|1|8|,|5| @9|4|6|%|