[wtp-releng] Change (back) in build procedure

[David M Williams <david_williams@xxxxxxxxxx>]

Over the weekend, I changed back to
use JRE 1.4 as the default JRE during the builds. 
This mostly affects the default JRE
lib's on the build path during the build, as, recall, we use 
the JDT Compiler to actually produce
the byte codes. If the EE is set, then the build class 
path is adjusted specific to the setting.
So, this only effects bundles for which the EE is not set. 

But, this is the cause for one of the
current compile errors, in xsd.ui. 
See bug 170389. 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=170389

I am less clear if this is related to
the build error in 
wsdl.ui

Craig, Please check. 

I'd originally changed temporarily to
JRE 1.5, since most of our 
tests have to be ran with 1.5 ... and,
that is still the case, all our 
unit tests are ran with 1.5. Eventually
we may have the ability to be 
smarter about those that only require
1.4 ... but, not for a while.