chg: format, types
fix: memory allocation off by 1 (nRegister)
memset 0 the input to the signal handler. valgrind wasn't happy
add assumes to prevent accidental use of mor than 8 StringSetS or too
many StringEndS'es
fix: minbase does not work for rings as coefficient
Merge pull request #537 from mmklee/factory_emsg

Factory emsg
fix: syntax of debug version (factory/cf_factor.cc)
fix typo