earliest injection initialization issues

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on June 19, 2012 12:19:02_

split from issue #234 filing a separate case (currently a lot of stuff under issue #234) to track
following up on some initialization issues that seem to work for plain
DR but will need to investigated to confirm:
- use fake TlsBitmap: FIXME for later: confirm not zeroed
- get_module_name() calling get_ldr_module_by_pc() crashes: hardcode for ntdll?

along with some things that we'll need for the private loader:
- skip LdrGetDllHandle: FIXME for later: delay
- skip RtlInitializeCriticalSection: FIXME for later: delay
- skip RtlHeapCreate: FIXME for later: delay

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=812_