glib 2.26.1: fix compilation failure
glib 2.26.1: fix compilation failure

during configure, pkgconfig detects dbus-1.pc which was installed
by dbus-native and thus the compilation fails because it can't
find dbus/dbus.h which is not yet installed for in the target's
sysroot.

This patch workaround this problem by not compiling the test program
which depends on dbus's headers.

Signed-off-by: Eric Bénard <96f164ad4d9b2b0dacf8ebee2bb1eeb3aa69adf1@eukrea.com>
Acked-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>
Acked-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

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