Adding check for duplicate non-case-sensitive part names that could cause issues with c code generation

Makefiles now honor symvers file locations if they are already specified in the environment.
This could cause problems if variables are unkowingly left defined.
A better option would be to override the variables on the command line
Variable names are changed to make it easier to derive them from module names.

Setting epics/util/Makefile.in to custom output dir and regenerating configure script for it, don't copy files that can cause race condition

seed in order to re-run with the same RNG, also initializing the RNG
with a tsc based seen by default. Updating some language around seeding the noise part.

The TrueRMS.pm part adds window sizes after the header \#endif in the MODEL.h header. Moving endif print to right before the header file close so they are contained.