New Trace Compiler

-------------------

Raptor supports an updated version of the Trace Compiler which has

an improved command-line interface that allows Raptor to specify the

directory in which trace data should be written.  This allows MMPs to

implement a new convention for where trace files are stored.

The new convention prevents clashes where building the same

source file for different MMPs would previously have resulted in two

build tasks trying to create the same trace file (header/dictionary).

This caused build slowdowns and also made the trace data inaccurate.

The standard for this directory is that the last two elements of the

path should be

   traces/traces_<targetname>_<ext>

e.g.

   traces/traces_euser_dll

The new trace compiler also creates "autogen" headers in a new location

under epoc32/include/platform rather than epoc32/include/internal.

Trace Headers Directory can now also be in SYSTEMINCLUDEs

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Some teams were having trouble getting qmake to generate MMPs with

USERINCLUDEs set.  So they were specifying the trace header directory in

their SYTEMINCLUDEs.  This change causes Raptor to look for the traces

directory in bot SYSTEMINCLUDES and USERINCLUDES.

Create Trace Directories During Makefile Parse

-----------------------------------------------

Some build engines consider it a "clash" when two jobs attempt to make the

same directory.  This change causes some important trace output directories

to be created during makefile parsing which removes the (small) possibility

that they would clash during the build part.