Improvements to token handling

• code simplification, movable/swappable tokens, Pstreams tweak.

added 10 commits

• 3a218815...8f1c9c9d - 2 commits from branch develop
• 391fe6ae - ENH: improved parallel transfer of strings
• 7146f6d3 - ENH: support method/spawn as mpirunDebug command-line options
• 50f0f94f - ENH: allow creation of ITstream by parsing string
• 07c76d73 - ENH: add move/swap semantics to string types and regExp
• 662eb0be - ENH: enhancements to behaviour of token
• 2bfda545 - ENH: simplify primitiveEntry parsing code, move append new tokens
• 0d00047e - ENH: use updated ITstream for parsing strings to token lists
• d1abfcff - ENH: add a test dictionary token streaming class

Compare with previous version

merged