[update] update to upstream 5.1.0-beta1
Squashed 'qtimageformats/' changes from bacb0be..f293cc8

f293cc8 disable module when gui is not available
7e58610 Doc: Fix module name in .qdocconf
647a723 Fix MNG imageformat plugin build.
847c2eb Fix tiff imageformat plugin build for WEC7.
8cdee97 Merge branch 'release' into stable
a2cd7f7 Fix the config.tests to correctly detect the 3rd party libraries
5073146 Fix compilation for Android.
4b1c277 Bump MODULE_VERSION to 5.1.0
1b8090c Merge branch 'dev' into stable
3e7042f Merge remote-tracking branch 'origin/release' into stable
313d60c Fix glitch on MNG animation Loops when QMovie caching is enabled
e86c435 sync.profile: Point dependencies to 'refs/heads/dev'

git-subtree-dir: qtimageformats
git-subtree-split: f293cc8539da5d4ea915c957abbba473515793ad
Merge commit '8ac8f942de5c00f6cd15f0cc0fa99d68d97f1622'
Squashed 'qtimageformats/' changes from f293cc8..37257d4

37257d4 Doc: Made "Qt Image Formats" entry in Assistant/Creator childless.
aa3c1a3 sync.profile: Point dependencies to an empty string
65f8998 Add changes-5.1.0 file
0b619ad test: Remove insignificant_test from tst_qtiff
eec8ed4 TGA-Reader: Bail out of check if the device is not seekable.

git-subtree-dir: qtimageformats
git-subtree-split: 37257d4be0cab8d5a92db9566f89ac115645f81f
[update] update to upstream commit 2e0e26d
Merge commit 'ef8b7f9f3772599c56ce5c33b3c0b731f2329a13'
[packaging] touch .git to make sure that syncqt is run

Signed-off-by: Carsten Munk <carsten.munk@jollamobile.com>