meson: Add support for EXTRA_REGRESS_OPTS

Add support for the EXTRA_REGRESS_OPTS environment variable in meson
which works just like with make and applies to all regress, ecpg and
isolation tests. TAP tests which support it under make will continue
to support the option.

Run it with e.g:

    EXTRA_REGRESS_OPTS="--temp-config=test.conf" meson test

Author: jeltz

src/tools/testwrap

@@ -2,6 +2,7 @@
 
 import argparse
 import shutil
+import shlex
 import subprocess
 import os
 import sys
@@ -51,7 +52,12 @@ env_dict = {**os.environ,
 if "PG_TEST_EXTRA" not in env_dict and args.pg_test_extra:
     env_dict["PG_TEST_EXTRA"] = args.pg_test_extra
 
-sp = subprocess.Popen(args.test_command, env=env_dict, stdout=subprocess.PIPE)
+if args.testname in ['regress', 'isolation', 'ecpg'] and 'EXTRA_REGRESS_OPTS' in env_dict:
+    test_command = args.test_command + shlex.split(env_dict['EXTRA_REGRESS_OPTS'])
+else:
+    test_command = args.test_command
+
+sp = subprocess.Popen(test_command, env=env_dict, stdout=subprocess.PIPE)
 # Meson categorizes a passing TODO test point as bad
 # (https://github.com/mesonbuild/meson/issues/13183).  Remove the TODO
 # directive, so Meson computes the file result like Perl does.  This could