1) Make prep_env.pl apply a patch to epoc32/sbs_config/s60_sbs_config.xml to replace the ARM kernel-side runtime ksrt4_0.lib with the GCCE one ksrt_gcce.lib 2) Fix romnibus.pl so it won't do case-tampering on the epocroot prefix of source paths in oby/iby files.

syntax: glob
*~
*.o
*.so
*.pyc
*linux-*-libc*