Revised fix for bug 3111 - switch to usrt4_0.lib, which is exported unconditionally usrt3_1.lib is invisibly exported by an FLM, so in platform builds this failed with "No rule to make usrt3_1.dso"

!COMPULSORY
!INCREMENTAL

<option keepgoing>
<option tools>
<option epoconly>

e32tools	e32tools\group
e32			e32
compsupp	e32\compsupp
f32			f32\group
hal			hal