Remove ambiguity for jsonb_path_match() and jsonb_path_exists()

There are 2-arguments and 4-arguments versions of jsonb_path_match() and
jsonb_path_exists().  But 4-arguments versions have optional 3rd and 4th
arguments, that leads to ambiguity.  In the same time 2-arguments versions are
needed only for @@ and @? operators.  So, rename 2-arguments versions to
remove the ambiguity.

Catversion is bumped.

src/include/catalog/catversion.h

@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	201903161
+#define CATALOG_VERSION_NO	201903201
 
 #endif

src/include/catalog/pg_operator.dat

@@ -3257,11 +3257,11 @@
   oprresult => 'jsonb', oprcode => 'jsonb_delete_path' },
 { oid => '4012', descr => 'jsonpath exists',
   oprname => '@?', oprleft => 'jsonb', oprright => 'jsonpath',
-  oprresult => 'bool', oprcode => 'jsonb_path_exists(jsonb,jsonpath)',
+  oprresult => 'bool', oprcode => 'jsonb_path_exists_opr(jsonb,jsonpath)',
   oprrest => 'contsel', oprjoin => 'contjoinsel' },
 { oid => '4013', descr => 'jsonpath match',
   oprname => '@@', oprleft => 'jsonb', oprright => 'jsonpath',
-  oprresult => 'bool', oprcode => 'jsonb_path_match(jsonb,jsonpath)',
+  oprresult => 'bool', oprcode => 'jsonb_path_match_opr(jsonb,jsonpath)',
   oprrest => 'contsel', oprjoin => 'contjoinsel' },
 
 ]

src/include/catalog/pg_proc.dat

@@ -9249,10 +9249,10 @@
   prosrc => 'jsonb_path_match' },
 
 { oid => '4010', descr => 'implementation of @? operator',
-  proname => 'jsonb_path_exists', prorettype => 'bool',
+  proname => 'jsonb_path_exists_opr', prorettype => 'bool',
   proargtypes => 'jsonb jsonpath', prosrc => 'jsonb_path_exists_opr' },
 { oid => '4011', descr => 'implementation of @@ operator',
-  proname => 'jsonb_path_match', prorettype => 'bool',
+  proname => 'jsonb_path_match_opr', prorettype => 'bool',
   proargtypes => 'jsonb jsonpath', prosrc => 'jsonb_path_match_opr' },
 
 # txid

src/test/regress/expected/jsonb_jsonpath.out

@@ -1751,6 +1751,12 @@ SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*] ? (@.a > 2)';
  f
 (1 row)
 
+SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ > 1)');
+ jsonb_path_exists 
+-------------------
+ t
+(1 row)
+
 SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', vars => '{"min": 1, "max": 4}');
  jsonb_path_exists 
 -------------------
@@ -1775,3 +1781,9 @@ SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 2';
  f
 (1 row)
 
+SELECT jsonb_path_match('[{"a": 1}, {"a": 2}]', '$[*].a > 1');
+ jsonb_path_match 
+------------------
+ t
+(1 row)
+

src/test/regress/sql/jsonb_jsonpath.sql

@@ -362,8 +362,10 @@ SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].
 
 SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*].a ? (@ > 1)';
 SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*] ? (@.a > 2)';
+SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ > 1)');
 SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', vars => '{"min": 1, "max": 4}');
 SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', vars => '{"min": 3, "max": 4}');
 
 SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 1';
 SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 2';
+SELECT jsonb_path_match('[{"a": 1}, {"a": 2}]', '$[*].a > 1');