flann: Fix update macro and download URL

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
ffmpeg: Update

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
cairo: Update

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
config.guess: Update

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
armadillo: Update

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
poco: Build as far as possible with parallel building

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
apr-util: Always declare static calling convention on static builds

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
poco: Update

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
poco: Fix winsock2.h inclusion

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
poco: Disable tests and samples

Fixes building. Poco doesn't supply a way to declare private/static lib deps
so linking fails for the tests.

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
apr-util: Explicitly disable freetds

It's broken. Fixes #546.

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
libsndfile: Disable sqlite

it is only used for regression testing.
lean and mean qtbase (Qt 5)
lean and mean vmime