Remove call to releaseables.pl script as now UH parser handles releaseables as well

Wrote a script to extract data for e32tests & f32tests based on input from: richardcoles / Symbian Foundation Community Member and Krishna Achugatla from Symbian.

Include -j option for sf-do-full-export target

1) Add support for parallel makefile generation by spliting compile into two-step operation. export first, followed by compile. 2) Remove smoketest from sources.csv and into sources_test.csv. This enables a fully resolved csv file to be fed directly back into a platform build.