Allow reproducible builds of all JDBC JAR files

[jgneff]

Fixes Bug 66346. Only the first change is required to fix the timestamps in tomcat-jdbc-src.jar, but this seemed a good time to fix the timestamps in the other two JAR files as well (tomcat-jdbc-test.jar and tomcat-jdbc-test-src.jar).

Can someone let me know how I might test the building of those two test JAR files? I couldn't figure out which Ant target to use for building and comparing them. I did run the unit test cases, which were successful:

$ ant test
...
   [concat] Testsuites with failed tests:

test:

BUILD SUCCESSFUL
Total time: 110 minutes 45 seconds

[jgneff]

I found how to test the Tomcat JDBC Connection Pool test JAR files (tomcat-jdbc-test.jar and tomcat-jdbc-test-src.jar). I first had to copy the build.properties.default file to build.properties with the following changes:

94c94
< tomcat.project.loc=https://svn.apache.org/repos/asf/tomcat/trunk/webapps/docs/project.xml
---
> tomcat.project.loc=https://github.com/apache/tomcat/tree/main/webapps/docs/project.xml
97c97
< tomcat.xsl.loc=https://svn.apache.org/repos/asf/tomcat/trunk/webapps/docs/tomcat-docs.xsl
---
> tomcat.xsl.loc=https://github.com/apache/tomcat/tree/main/webapps/docs/tomcat-docs.xsl

With those changes, I could run:

$ cd modules/jdbc-pool
$ ant build-test
$ mv output output1
$ ant build-test
$ mv output output2

Before this pull request, two consecutive builds show the following differences:

$ diff -qr output1 output2 
Files output1/tomcat-jdbc-src.jar and output2/tomcat-jdbc-src.jar differ
Files output1/tomcat-jdbc-test-src.jar and output2/tomcat-jdbc-test-src.jar differ
Files output1/tomcat-jdbc-test.jar and output2/tomcat-jdbc-test.jar differ

After this pull request, the contents of the two output directories are identical.

[jgneff]

After this fix, the only remaining difference that I have found between any two builds of Tomcat using the default Ant target is the build path that gets included in two XML files:

$ diff -qr lxd/output1 kvm/output1
Files lxd/output1/jdbc-pool/doc/changelog.xml and kvm/output1/jdbc-pool/doc/changelog.xml differ
Files lxd/output1/jdbc-pool/doc/jdbc-pool.xml and kvm/output1/jdbc-pool/doc/jdbc-pool.xml differ

diff -r lxd/output1/jdbc-pool/doc/changelog.xml kvm/output1/jdbc-pool/doc/changelog.xml
19c19
<   <!ENTITY project SYSTEM "/home/ubuntu/src/tomcat/modules/jdbc-pool/includes/project.xml">
---
>   <!ENTITY project SYSTEM "/home/john/src/tomcat/modules/jdbc-pool/includes/project.xml">
diff -r lxd/output1/jdbc-pool/doc/jdbc-pool.xml kvm/output1/jdbc-pool/doc/jdbc-pool.xml
19c19
<   <!ENTITY project SYSTEM "/home/ubuntu/src/tomcat/modules/jdbc-pool/includes/project.xml">
---
>   <!ENTITY project SYSTEM "/home/john/src/tomcat/modules/jdbc-pool/includes/project.xml">