Save floating regs on Sun & MASSCOMP in exchj.s

Simplify Exception handling (destructor order fixed in 1.2.1)

Improve implementation of String

Convert operatorX members to friends?

Fix readFrom to delete readTable in case exception
is raised.

Fix storeOn to delete storeOnDict in case exception
is raised.

Modify readFrom to handle unknown classes?

Make collection printOn like ST-80?

Implement RunArray and Text

Modify Array/Arrayobid::reSize to use realloc
