Some packages need to specify -std=gnu89 to compile, and gcc51 defaults to
gnu11 now.
Also, updated mozilla-nss-nspr to 3.19 and 4.10.8, respectively.

*** 37,46 ****
--- 37,49 ----
  BUILD_DEPENDS_IPS="developer/lexer/flex"
  DEPENDS_IPS="library/libidn library/security/openssl@1.0.2 web/ca-bundle"
  
  CONFIGURE_OPTS="--with-ssl=openssl --mandir=$PREFIX/share/man POD2MAN=/usr/perl5/5.16.1/bin/pod2man"
  
+ # Use old gcc4 standards level for this.
+ CFLAGS="$CFLAGS -std=gnu89"
+ 
  BUILDARCH=32
  
  make_sfw_links() {
      logmsg "Creating SFW symlinks"
      logcmd mkdir -p $DESTDIR/$PREFIX/sfw/bin