Use pkg-config for checking Hunspell's CFLAGS and LIBS
Use pkg-config for checking Hunspell's CFLAGS and LIBS

TBD: Michael Hasselmann
Fixes linking on Fedora where hunspell lib is libhunspell-1.2.so.

develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,maliit/plugins,maliit/plugins,RHawkeyed/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,maliit/plugins,KDE/plasma-maliit-plugins,maliit/plugins,develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,KDE/plasma-maliit-plugins,RHawkeyed/plugins,RHawkeyed/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins