Add ALTER PACKAGE BODY and CRETE OR ALTER PACKAGE BODY parse rules (#8309)

Author: Noremos

doc/sql.extensions/README.packages.txt

@@ -28,7 +28,7 @@ Syntax:
         PROCEDURE <name> [( <parameters> ) [RETURNS ( <parameters> )]]
 
     <package_body> ::=
-        { CREATE | RECREATE } PACKAGE BODY <name>
+        { CREATE [OR ALTER] | ALTER | RECREATE } PACKAGE BODY <name>
         AS
         BEGIN
             [ <package_item> ... ]

src/dsql/parse-conflicts.txt

@@ -1 +1 @@
-115 shift/reduce conflicts, 22 reduce/reduce conflicts.
+117 shift/reduce conflicts, 22 reduce/reduce conflicts.

src/dsql/parse.y

@@ -1711,6 +1711,7 @@ replace_clause
 	| FUNCTION replace_function_clause			{ $$ = $2; }
 	| TRIGGER replace_trigger_clause			{ $$ = $2; }
 	| PACKAGE replace_package_clause			{ $$ = $2; }
+	| PACKAGE BODY replace_package_body_clause	{ $$ = $3; }
 	| VIEW replace_view_clause					{ $$ = $2; }
 	| EXCEPTION replace_exception_clause		{ $$ = $2; }
 	| GENERATOR replace_sequence_clause			{ $$ = $2; }
@@ -3228,6 +3229,12 @@ package_body_item
 	;
 
 
+%type <ddlNode> replace_package_body_clause
+replace_package_body_clause
+	: package_body_clause
+		{ $$ = newNode<RecreatePackageBodyNode>($1); }
+	;
+
 %type <localDeclarationsNode> local_declarations_opt
 local_declarations_opt
 	: local_forward_declarations_opt local_nonforward_declarations_opt
@@ -4294,6 +4301,7 @@ alter_clause
 	| TRIGGER alter_trigger_clause			{ $$ = $2; }
 	| PROCEDURE alter_procedure_clause		{ $$ = $2; }
 	| PACKAGE alter_package_clause			{ $$ = $2; }
+	| PACKAGE BODY replace_package_body_clause	{ $$ = $3; }
 	| DATABASE
 			{ $<alterDatabaseNode>$ = newNode<AlterDatabaseNode>(); }
 		alter_db($<alterDatabaseNode>2)