fix hsqldb java version detection

1) The values were not properly exclusive.
   E.g. when compiling under OpenJDK 1.6, iscjava12 was set (!)

2) On Java 1.6, should not enable the parts that are (only) for Java7!

3) When non-JAVA7, need to preprocess the files that have JAVA7-only code, so that it gets removed

Change-Id: I99b6bd9e781fee1007a04a4dc3d3f952c1b2eb00

hsqldb/patches/jdbc-4.1.patch

---- misc/hsqldb/build/build.xml	2012-02-08 15:14:42.827123541 +0000
-+++ misc/build/hsqldb/build/build.xml	2012-02-08 15:21:43.827722388 +0000
-@@ -98,7 +98,11 @@
+--- misc/hsqldb/build/build.xml	2012-07-12 10:58:11.000000000 +0200
++++ misc/build/hsqldb/build/build.xml	2012-07-12 10:49:28.000000000 +0200
+@@ -98,16 +98,24 @@
        <echo message="ant.java.hasjsse=${ant.java.hasjsse}" />
     </target>
  
 -   <target name="javaversion6">
-+   <target name="javaversion7">
++   <target name="javaversion7" unless="ant.java.iscjavaset">
 +      <available classname="java.util.Objects" property="ant.java.iscjava17"/>
++      <available classname="java.util.Objects" property="ant.java.iscjavaset"/>
 +   </target>
 +
-+   <target name="javaversion6" depends="javaversion7" unless="ant.java.iscjava17">
++   <target name="javaversion6" depends="javaversion7" unless="ant.java.iscjavaset">
        <available classname="java.net.IDN" property="ant.java.iscjava16"/>
++      <available classname="java.net.IDN" property="ant.java.iscjavaset"/>
     </target>
  
-@@ -210,6 +214,7 @@
+-   <target name="javaversion4" depends="javaversion6" unless="ant.java.iscjava16">
++   <target name="javaversion4" depends="javaversion6" unless="ant.java.iscjavaset">
+       <available classname="java.nio.Buffer" property="ant.java.iscjava14"/>
++      <available classname="java.nio.Buffer" property="ant.java.iscjavaset"/>
+    </target>
+ 
+-   <target name="javaversion2" depends="javaversion4" unless="ant.java.iscjava14">
++   <target name="javaversion2" depends="javaversion4" unless="ant.java.iscjavaset">
+       <available classname="java.lang.ref.Reference" property="ant.java.iscjava12"/>
++      <available classname="java.lang.ref.Reference" property="ant.java.iscjavaset"/>
+    </target>
+ 
+    <target name="-prepare" depends="init,javaversion2">
+@@ -166,6 +177,7 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcStatement.java"/>
+         <arg file="${src}/org/hsqldb/persist/LockFile.java"/>
+         <arg file="${src}/org/hsqldb/persist/Logger.java"/>
+@@ -183,6 +195,7 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
+@@ -210,6 +223,7 @@
          <arg value="+JAVA2FULL"/>
          <arg value="-JAVA4"/>
          <arg value="-JAVA6"/>
@@ -21,7 +52,15 @@
         </java>
      </target>
  
-@@ -244,6 +249,7 @@
+@@ -218,6 +232,7 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
+@@ -244,6 +259,7 @@
          <arg value="+JAVA2FULL"/>
          <arg value="+JAVA4"/>
          <arg value="-JAVA6"/>
@@ -29,19 +68,10 @@
         </java>
      </target>
  
-@@ -279,10 +285,47 @@
-         <arg value="+JAVA2FULL"/>
-         <arg value="+JAVA4"/>
-         <arg value="+JAVA6"/>
-+        <arg value="+JAVA7"/>
-+      </java>
-+    </target>
-+
-+    <target name="switchtojdk17" depends="switchtojdk16"
-+            description="self explanatory" if="ant.java.iscjava17">
-+      <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
-+        <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
-+        <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
+@@ -253,6 +269,43 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
 +        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
 +        <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
 +        <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
@@ -69,6 +99,23 @@
 +        <arg value="+JAVA2FULL"/>
 +        <arg value="+JAVA4"/>
 +        <arg value="+JAVA6"/>
++        <arg value="-JAVA7"/>
++      </java>
++    </target>
++
++    <target name="switchtojdk17" depends="switchtojdk16"
++            description="self explanatory" if="ant.java.iscjava17">
++      <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
++        <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
++        <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
+@@ -279,10 +332,11 @@
+         <arg value="+JAVA2FULL"/>
+         <arg value="+JAVA4"/>
+         <arg value="+JAVA6"/>
 +        <arg value="+JAVA7"/>
        </java>
      </target>