compile magick/semaphore.c with -O0 on ppc64el

Bug-Debian: https://bugs.debian.org/837719
Forwarded: no
Last-Update: 2017-12-10

Gbp-Pq: Name semaphore_O0_ppc64el.patch

link-demos

Gbp-Pq: Name link-demos.diff

graphicsmagick (1.4+really1.3.38+hg16728-1) unstable; urgency=high

  * Mercurial snapshot, fixing the following security issues:
    - ThrowLoggedException(): dereference after NULL check,
    - ReadJP2Image(): division by float zero,
    - MagickXMakeMagnifyImage(): division by zero,
    - ScaleImage(): resource leak,
    - GetLocaleMessageFromTag(): out of bounds read,
    - DrawPrimitive(): out of bounds access,
    - ReadOnePNGImage(): use of uninitialized value,
    - ReadMNGImage(): heap use after free in CloseBlob(),
    - ReadMNGImage(): indirect leak,
    - ReadOnePNGImage(): indirect leak in MagickMallocCleared().

[dgit import unpatched graphicsmagick 1.4+really1.3.38+hg16728-1]

Import graphicsmagick_1.4+really1.3.38+hg16728.orig.tar.xz

[dgit import orig graphicsmagick_1.4+really1.3.38+hg16728.orig.tar.xz]

Import graphicsmagick_1.4+really1.3.38+hg16728-1.debian.tar.xz

[dgit import tarball graphicsmagick 1.4+really1.3.38+hg16728-1 graphicsmagick_1.4+really1.3.38+hg16728-1.debian.tar.xz]