ACT-258 fixing db create schema scripts for mysql, postgresql and oracle

modules/activiti-engine/src/main/resources/org/activiti/db/create/activiti.mysql.create.sql

@@ -146,6 +146,8 @@ create table ACT_HI_PROC_INST (
     START_TIME_ datetime not null,
     END_TIME_ datetime,
     DURATION_ bigint,
+    START_USER_ID_ varchar(255),
+    START_ACT_ID_ varchar(255),
     END_ACT_ID_ varchar(255),
     primary key (ID_),
     unique (PROC_INST_ID_),

modules/activiti-engine/src/main/resources/org/activiti/db/create/activiti.oracle.create.sql

@@ -145,6 +145,8 @@ create table ACT_HI_PROC_INST (
     START_TIME_ TIMESTAMP(6) not null,
     END_TIME_ TIMESTAMP(6),
     DURATION_ NUMBER(19,0),
+    START_USER_ID_ NVARCHAR2(255),
+    START_ACT_ID_ NVARCHAR2(255),
     END_ACT_ID_ NVARCHAR2(255),
     primary key (ID_),
     unique (PROC_INST_ID_)

modules/activiti-engine/src/main/resources/org/activiti/db/create/activiti.postgres.create.sql

@@ -146,6 +146,8 @@ create table ACT_HI_PROC_INST (
     START_TIME_ timestamp not null,
     END_TIME_ timestamp,
     DURATION_ bigint,
+    START_USER_ID_ varchar(255),
+    START_ACT_ID_ varchar(255),
     END_ACT_ID_ varchar(255),
     primary key (ID_),
     unique (PROC_INST_ID_),