Split shootout compatibility module into three — normal, GMP, and RE2 (…

…chapel-lang#23443)

[trivial, not reviewed]

In chapel-lang#23428, I failed to recognize the obvious — that in introducing my
'Compat' module, I was infecting all tests that `use`d it with potential
dependencies (GMP, RE2) that their skipifs wouldn't skip past. Here, I'm
splitting the Compat module into three so that each test can only bring
in those third-party dependencies that it was already expecting to use.

test/studies/shootout/submitted/Compat.chpl

@@ -1,21 +1,6 @@
-use IO, BigInteger, Regex;
+use IO;
 
 @deprecated("openfd is deprecated, please use the file initializer with a 'c_int' argument instead")
 proc openfd(x) {
   return new file(x);
 }
-
-@deprecated("bigint.div_q using Round is deprecated, use the standalone function div with roundingMode instead")
-proc ref bigint.div_q(x, y) {
-  div(this, x, y);
-}
-
-@deprecated("'Regex.compile' is deprecated. Please use 'new regex()' instead.")
-proc compile(x) {
-  return new regex(x);
-}
-
-@deprecated("regex.sub is deprecated. Please use string.replace.")
-proc regex.sub(x, y) {
-  return y.replace(this, x);
-}

test/studies/shootout/submitted/CompatGMP.chpl

@@ -0,0 +1,6 @@
+use BigInteger;
+
+@deprecated("bigint.div_q using Round is deprecated, use the standalone function div with roundingMode instead")
+proc ref bigint.div_q(x, y) {
+  div(this, x, y);
+}

test/studies/shootout/submitted/CompatGMP.notest

@@ -0,0 +1 @@
+Compatability shim

test/studies/shootout/submitted/CompatRE2.chpl

@@ -0,0 +1,11 @@
+use Regex;
+
+@deprecated("'Regex.compile' is deprecated. Please use 'new regex()' instead.")
+proc compile(x) {
+  return new regex(x);
+}
+
+@deprecated("regex.sub is deprecated. Please use string.replace.")
+proc regex.sub(x, y) {
+  return y.replace(this, x);
+}

test/studies/shootout/submitted/CompatRE2.notest

@@ -0,0 +1 @@
+Compatability shim

test/studies/shootout/submitted/pidigits2.chpl

@@ -68,4 +68,4 @@ iter genDigits(numDigits) {
     numer *= 10;
   }
 }
-use Compat;
+use Compat, CompatGMP;

test/studies/shootout/submitted/regexredux2.chpl

@@ -58,4 +58,4 @@ proc main(args: [] string) {
   writeln(data.size);
   writeln(copy.size);
 }
-use Compat;
+use Compat, CompatRE2;

test/studies/shootout/submitted/regexredux3.chpl

@@ -59,4 +59,4 @@ proc main(args: [] string) {
   writeln(data.size);
   writeln(copy.size);
 }
-use Compat;
+use Compat, CompatRE2;