[Lilypond] Incorrectly print notes with length 16*7 and 16*5

[Jimmie Felidae]

> I'm not top posting.

Tested on Lilypond 2.17.29 and latest release of 2.16.

Example 1:
% Wrong output in bar 1
\version "2.14.0"

\relative c {
  \key d \major
  \time 6/8
  g16*7 fis16*5
  |
  d2.
  |
}

Example 2:
% Wrong output in bar 1
\version "2.14.0"

\relative c {
  \key f \major
  \time 4/4
  \tempo 4 = 126
  c4 g16*5 r16*7
  |
  f8 d16 d8. g8 f4 d8 c
  |
  d1
  |

}