Exclude .hg repositories from epoc32 merge

Exclude *.sym files from binary packaging

1) Update binary packaging solution to invoke 7za directly. 2) Add partially complete ATS sf-send-testpkg target and associated tools

Removed obsolete variable (@includes). Moved remaining code round so that an XML entry is created even if there are no local files detected. (Ie same approach as src repositories.)

Copy Text::CSV module into source and change to use it, as we can't rely on it appearing in the Perl library when Perl 5.6.1 is installed.

Package RnD binaries from rnd root location to reduce size of include list

Make use of <hlm:fastcopy> taskdef to speed up copying of RnD binary tree.

Make RnD merge conditional, only on discovery of rnd binary tree

Add merge of RnD binaries into epoc32 tree as HLM target. Also create empty sources.csv and baseline.txt files if source sync/get baseline is disabled.

Improved zip template generation script, to take a third argument for the required location of the output file. Updated build script to supply third argument. Standardised indentation in build.xml - 4 columns; no tabs.