William Roberts <williamr@symbian.org> [Mon, 14 Jun 2010 10:17:11 +0100] rev 146
Revised GCCE workaround for Bug 2926 - must use :zip export to ensure that the various files are present
before any builds are attempted, otherwise there is "no rule to make usrt3_1.lib" and no
attempt is made to link any executables even after the extension makefiles are executed.