bug fix, `#279 Problem when using a function to set initial value"

  reported by Marcel Hendrix in
  http://sourceforge.net/p/ngspice/bugs/279/

"SPF_time" erroneously did match "time"

introduce a saver matcher for
  `v(' `i(' `temper' `time' and `hertz'
when checking for behavioural R,L,C devices
sharedspice.c, bug fix, don't write beyond size of array `p'