Misc scripts updates
tweak sql parameters for performance.
Add sql INSERT/UPDATE locks.

The SQL INSERT  statement can only be issued once, ever, for a given
atom.  Add locks to prevent two threads from trying to call it
simultaneously.
Move common scm configuration to one file.
Update the various language processing scripts.
Merge pull request #467 from linas/master

SQL lock fixes, SQL parallelism, misc config
Fix bug introduced previously...
Add a helpful suggestion
Whitespace fixes.
Whitespace fixes; minor documentation
Pretty-print the caught signal
Use std::yield not sched_yield
cogserver -- even prettier exception printing
SQL bugfix; was locking the wrong lock.
cogserver: cleanup logger message
Arghh. One last fix to the create lock.
get rid of the yield, its stupid
Use std::sleep_for except it not supported

on older compilers ... will have to wait for newer gcc & glibc
to be available on all platforms.
Change table to use bigint for uuids
sql: remove dead code