Add additional libraries needed to link heimdall

[baerrach]

I needed to add jasper and libwebp as I was getting linker errors:

$ make
[...]
../x86_64-w64-mingw32/bin/ld.exe: cannot find -ljasper
../x86_64-w64-mingw32/bin/ld.exe: cannot find -lwebp

[Benjamin-Dobell]

This seems very peculiar. Heimdall definitely doesn't depend on video or image codecs - at least not directly.

The only way they could be getting pulled in is if Qt5 has those dependencies, in which case Pacman should be resolving Qt5's dependencies.

[realchrisolin]

Likely, that is exactly what is requiring those dependencies. A viable workaround is installing the following packages:

pacman -S mingw-w64-x86_64-jasper mingw-w64-x86_64-libwebp

I summarized the changes here in case less experienced people come across this pull request.

[realchrisolin]

Also, for posterity:

$ make
[  6%] Built target pit
[ 53%] Built target heimdall
[ 56%] Automatic moc for target heimdall-frontend
[ 56%] Built target heimdall-frontend_autogen
[ 60%] Linking CXX executable ../bin/heimdall-frontend.exe
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.2.0/../../../../x86_64-w64 -mingw32/bin/ld.exe: cannot find -ljasper
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lwebp
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lwebp
collect2.exe: error: ld returned 1 exit status
heimdall-frontend/CMakeFiles/heimdall-frontend.dir/build.make:338: recipe for target 'bin/heimdall-frontend.exe' failed
make[2]: *** [bin/heimdall-frontend.exe] Error 1
CMakeFiles/Makefile2:198: recipe for target 'heimdall-frontend/CMakeFiles/heimdall-frontend.dir/all' failed
make[1]: *** [heimdall-frontend/CMakeFiles/heimdall-frontend.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2