Converted tc-enter-chroot.sh into tc_enter_chroot.py.
 Python scripts are more readable and maintainable.
 Also added a USE="mounted_sources" flag to be passed to the ebuild.
 The ebuild changes will come in later in the chromium codereview server.
 In a few days once we've ported all our scripts to use tc_enter_toolchain.py,
 I will remove it from the repo.
 Testing:
 Did a full/incremental build of the toolchain using mounted sources and
 it worked.

PRESUBMIT=passed
R=raymes,bjanakiraman
DELTA=138  (124 added, 5 deleted, 9 changed)
OCL=45248-p2
RCL=45275-p2
RDATE=2010/11/17 10:33:39


P4 change: 42606260
3 files changed
tree: da4b72beac5e5109ba2b63dba8921407245bec52
  1. .git5_specs/
  2. v14/