[librsvg: 3/3] Merge branch 'font-size-relative' into 'master'

[Federico Mena Quintero <federico src gnome org>]

commit 540e055f91cac03cd435b846cc04e81d1bfcb6d7
Merge: e3adc1a0 2699eebe
Author: Federico Mena Quintero <federico mena gmail com>
Date:   Sat Feb 24 03:22:29 2018 +0000

    Merge branch 'font-size-relative' into 'master'
    
    Font size relative
    
    See merge request GNOME/librsvg!19

 librsvg/rsvg-css.c                                 |  33 +++++++++---
 librsvg/rsvg-text.c                                |   4 --
 rsvg_internals/src/length.rs                       |   5 +-
 .../reftests/bugs/108-font-size-relative-ref.png   | Bin 0 -> 2297 bytes
 .../reftests/bugs/108-font-size-relative.svg       |  60 +++++++++++++++++++++
 .../render-crash/581491-zero-sized-text.svg        |  20 +++++++
 6 files changed, 109 insertions(+), 13 deletions(-)
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