PR# 14271 Tries to use precompile even if excluded for platform

In order to avoid the problem described in issue #14270, so that others will not make the same mistake that I did, I decided to configure my project so that it would use the precompiled vision2 library only on Windows. First I tried this:

		<precompile name="precompile" location="$ISE_PRECOMP\vision2.ecf">
			<condition>
				<platform value="windows"/>
			</condition>
		</precompile>

It compiled correctly on Windows, but when I tried it on Mac OS X this happened:

ec -batch -config apps/adl_workbench/app/adl_workbench.ecf -target adl_workbench -finalize -c_compile
Precompile will automatically be built
because of the -stop/-batch option.

(The build then failed, because I have not bothered building the precompiled libraries on the Mac and the permissions are not set. That's ok, I would expect it to fail.)

I tried reversing the condition:

		<precompile name="precompile" location="$ISE_PRECOMP\vision2.ecf">
			<condition>
				<platform excluded_value="unix macintosh"/>
			</condition>
		</precompile>

But the same thing happened. It is ignoring the condition and trying to use the precompile on platforms where it has been instructed not to do so.