Convert ERR32-C to use the new dataflow library

Author: jketema

c/cert/src/rules/ERR32-C/DoNotRelyOnIndeterminateValuesOfErrno.ql

@@ -20,7 +20,7 @@ import codingstandards.c.cert
 import codingstandards.c.Errno
 import codingstandards.c.Signal
 import semmle.code.cpp.controlflow.Guards
-import semmle.code.cpp.dataflow.DataFlow
+import semmle.code.cpp.dataflow.new.DataFlow
 
 /**
  * A check on `signal` call return value

c/cert/test/rules/ERR32-C/DoNotRelyOnIndeterminateValuesOfErrno.expected

@@ -1,7 +1,3 @@
-WARNING: module 'DataFlow' has been deprecated and may be removed in future (DoNotRelyOnIndeterminateValuesOfErrno.ql:56,7-15)
-WARNING: module 'DataFlow' has been deprecated and may be removed in future (DoNotRelyOnIndeterminateValuesOfErrno.ql:56,27-35)
-WARNING: module 'DataFlow' has been deprecated and may be removed in future (DoNotRelyOnIndeterminateValuesOfErrno.ql:57,9-17)
-WARNING: module 'DataFlow' has been deprecated and may be removed in future (DoNotRelyOnIndeterminateValuesOfErrno.ql:60,9-17)
 | test.c:12:5:12:10 | call to perror | `errno` has indeterminate value after this $@. | test.c:10:21:10:26 | call to signal | call to signal |
 | test.c:30:5:30:10 | call to perror | `errno` has indeterminate value after this $@. | test.c:26:21:26:26 | call to signal | call to signal |
 | test.c:49:5:49:10 | call to perror | `errno` has indeterminate value after this $@. | test.c:45:21:45:26 | call to signal | call to signal |