Log Message:
be stricter when requiring gcc 4.4+:
* pkg/48508 refers only SunOS and NetBSD (in fact, only NetBSD 5 and
  Solaris 10 - but I expect at least lower versions come with same
  issues and higher might have improved toolchain)
* check only for x86 architectures (no sse3 on sparc, ppc, arm, mips, ...)
* only require minimum gcc version when gcc is the used compiler - SunPRO,
  clang, pcc ... might behave differently
* hopefully someone picks it up and fix the binutils dependency, if required