Note SA_SIGINFO, FPE trapcodes and sh fixes. Fix whitespace, use two blank lines before new chapters.
Note SA_SIGINFO, FPE trapcodes and sh fixes.
Fix whitespace, use two blank lines before new chapters.

Approved by:	jkh

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase