Move the default rw_base from 4 Meg to 8 Meg, to allow for the very large Qt executables
This change is done by explicit ARMCC overrides in revelant .pro files, e.g. this one in hbcore.pro
# Executable section is now over 4MB in Symbian. Extend it to 8MB
QMAKE_LFLAGS.ARMCC += --rw-base 0x800000